The Parties to the Convention,
Being conscious of the need to preserve the human environment in general and the marine environment in particular,
Recognizing that deliberate, negligent or accidental release of oil and other harmful substances from ships constitutes a serious source of pollution,
Recognizing also the importance of the International Convention for the Prevention of Pollution of the Sea by Oil, 1954, as being the first multilateral instrument to be concluded with the prime objective of protecting the environment, and appreciating the significant contribution which that Convention has made in preserving the seas and coastal environment from pollution,
Desiring to achieve the complete elimination of intentional pollution of the marine environment by oil and other harmful substances and the minimization of accidental discharge of such substances,
Considering that this object may best be achieved by establishing rules not limited to oil pollution having a universal purport,
Have agreed as follows:
Article 1. General obligations under the Convention
(1) The Parties to the Convention undertake to give effect to the provisions of the present Convention and those Annexes thereto by which they are bound, in order to prevent the pollution of the marine environment by the discharge of harmful substances or effluents containing such substances in contravention of the Convention.
(2) Unless expressly provided otherwise, a reference to the present Convention constitutes at the same time a reference to its Protocols and to the Annexes.
Article 2. Definitions
For the purposes of the present Convention, unless expressly provided otherwise:
(1) “Regulations” means the Regulations contained in the Annexes to the present Convention.
(2) “Harmful substance” means any substance which, if introduced into the sea, is liable to create hazards to human health, to harm living resources and marine life, to damage amenities or to interfere with other legitimate uses of the sea, and includes any substance subject to control by the present Convention.
(3)(a) “Discharge”, in relation to harmful substances or effluents containing such substances, means any release howsoever caused from a ship and includes any escape, disposal, spilling, leaking, pumping, emitting or emptying;
(b) “Discharge” does not include:
(i) dumping within the meaning of the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, done at London on 13 November 1972; or
(ii) release of harmful substances directly arising from the exploration, exploitation and associated off-shore processing of sea-bed mineral resources; or
(iii) release of harmful substances for purposes of legitimate scientific research into pollution abatement or control.
(4) “Ship” means a vessel of any type whatsoever operating in the marine environment and includes hydrofoil boats, air-cushion vehicles, submersibles, floating craft and fixed or floating platforms.
(5) “Administration” means the Government of the State under whose authority the ship is operating. With respect to a ship entitled to fly a flag of any State, the Administration is the Government of that State. With respect to fixed or floating platforms engaged in exploration and exploitation of the sea-bed and subsoil thereof adjacent to the coast over which the coastal State exercises sovereign rights for the purposes of exploration and exploitation of their natural resources, the Administration is the Government of the coastal State concerned.
(6) “Incident” means an event involving the actual or probable discharge into the sea of a harmful substance, or effluents containing such a substance.
(7) “Organization” means the Inter-Governmental Maritime Consultative Organization.*
* The name of the Organization was changed to “International Maritime Organization” by virtue of amendments to the Organization’s Convention entered into force on 22 May 1982.
Article 3. Application
(1) The present Convention shall apply to:
(a) ships entitled to fly the flag of a Party to the Convention; and
(b) ships not entitled to fly the flag of a Party but which operate under the authority of a Party.
(2) Nothing in the present Article shall be construed as derogating from or extending the sovereign rights of the Parties under international law over the sea-bed and subsoil thereof adjacent to their coasts for the purposes of exploration and exploitation of their natural resources.
(3) The present Convention shall not apply to any warship, naval auxiliary or other ship owned or operated by a State and used, for the time being, only on government non-commercial service. However, each Party shall ensure by the adoption of appropriate measures not impairing the operations or operational capabilities of such ships owned or operated by it, that such ships act in a manner consistent, so far as is reasonable and practicable, with the present Convention.
Article 4. Violation
(1) Any violation of the requirements of the present convention shall be prohibited and sanctions shall be established therefor under the law of the Administration of the ship concerned wherever the violation occurs. If the Administration is informed of such a violation and is satisfied that sufficient evidence is available to enable proceedings to be brought in respect of any violation, it shall cause such proceedings to be taken as soon as possible, in accordance with its law.
(2) Any violation of the requirements of the present Convention within the jurisdiction of any Party to the Convention shall be prohibited and sanctions shall be established therefor under the law of that Party. Whenever such a violation occurs, that party shall either:
(a) cause proceedings to be taken in accordance with its law; or
(b) furnish to the Administration of the ship such information and evidence as may be in its possession that a violation has occurred.
(3) Where information or evidence with respect to any violation of the present Convention by a ship is furnished to the Administration of that ship, the Administration shall promptly inform the Party which has furnished the information or evidence, and the Organization, of the action taken.
(4) The penalties specified under the law of a Party pursuant to the present Article shall be adequate in severity to discourage violations of the present Convention and shall be equally severe irrespective of where the violations occur.
Article 5. Certificates and special rules on inspection of ships
(1) Subject to the provi
sions of paragraph (2) of the present Article a certificate issued under the authority of a Party to the Convention in accordance with the provisions of the Regulations shall be accepted by the other Parties and regarded for all purposes covered by the present Convention as having the same validity as a certificate issued by them.
(2) A ship required to hold a certificate in accordance with the provisions of the Regulations is subject, while in the ports or off-shore terminals under the jurisdiction of a Party, to inspection by officers duly authorized by that Party. Any such inspection shall be limited to verifying that there is on board a valid certificate, unless there are clear grounds for believing that the conditions of the ship or its equipment does not correspond substantially with the particulars of that certificate. In that case, or if the ship does not carry a valid certificate, the Party carrying out the inspection shall take such steps as will ensure that the ship shall not sail until it can proceed to sea without presenting an unreasonable threat of harm to the marine environment. That Party may, however, grant such a ship permission to leave the port or off-shore terminal for the purpose of proceeding to the nearest appropriate repair yard available.
(3) If a Party denies a foreign ship entry to the ports or off-shore terminals under its jurisdiction or takes any action against such a ship for the reason that the ship does not comply with the provisions of the present Convention, the Party shall immediately inform the consul or diplomatic representative of the Party whose flag the ship is entitled to fly, or if this is not possible, the Administration of the ship concerned. Before denying entry or taking such action the Party may request consultation with the Administration of the ship concerned. Information shall also be given to the Administration when a ship does not carry a valid certificate in accordance with the provisions of the Regulations.
(4) With respect to the ships of non-Parties to the Convention, Parties shall apply the requirements of the present Convention as may be necessary to ensure that no more favourable treatment is given to such ships.
Article 6. Detection of violations and enforcement of the Convention
(1) Parties to the Convention shall co-operate in the detection of violations and the enforcement of the provisions of the present Convention, using all appropriate and practicable measures of detection and environmental monitoring, adequate procedures for reporting and accumulation of evidence.
(2) A ship to which the present Convention applies may, in any port or off-shore terminal of a Party, be subject to inspection by officers appointed or authorized by that Party for the purpose of verifying whether the ship has discharged any harmful substances in violation of the provisions of the Regulations. If an inspection indicates a violation of the Convention, a report shall be forwarded to the Administration for any appropriate action.
(3) Any Party shall furnish to the Administration evidence, if any, that the ship has discharged harmful substances or effluents containing such substances in violation of the provisions of the Regulations. If it is practicable to do so, the competent authority of the former Party shall notify the Master of the ship of the alleged violation.
(4) Upon receiving such evidence, the Administration so informed shall investigate the matter, and may request the other Party to furnish further or better evidence of the alleged contravention. If the Administration is satisfied that sufficient evidence is available to enable proceedings to be brought in respect of the alleged violation, it shall cause such proceedings to be taken in accordance with its law as soon as possible. The Administration shall promptly inform the Party which has reported the alleged violation, as well as the Organization, of the action taken.
(5) A Party may also inspect a ship to which the present Convention applies when it enters the ports or off-shore terminals under its jurisdiction, if a request for an investigation is received from any Party together with sufficient evidence that the ship has discharged harmful substances or effluents containing such substances in any place. The report of such investigation shall be sent to the Party requesting it and to the Administration so that the appropriate action may be taken under the present Convention.
Article 7. Undue delay to ships
(1) All possible efforts shall be made to avoid a ship being unduly detained or delayed under articles 4, 5 or 6 of the present Convention.
(2) When a ship is unduly detained or delayed under articles 4, 5 or 6 of the present Convention, it shall be entitled to compensation for any loss or damage suffered.
Article 8. Reports on incidents involving harmful substances
(1) A report of an incident shall be made without delay to the fullest extent possible in accordance with the provisions of Protocol I to the present Convention.
(2) Each Party to the Convention shall:
(a) make all arrangements necessary for an appropriate officer or agency to receive and process all reports on incidents; and
(b) notify the Organization with complete details of such arrangements for circulation to other Parties and Member States of the Organization.
(3) Whenever a Party receives a report under the provisions of the present Article, that Party shall relay the report without delay to:
(a) the Administration of the ship involved; and
(b) any other State which may be affected.
(4) Each Party to the Convention undertakes to issue instructions to its maritime inspection vessels and aircraft and to other appropriate services, to report to its authorities any incident referred to in Protocol I to the present Convention. That Party shall, if it considers it appropriate, report accordingly to the Organization and to any other party concerned.
Article 9. Other treaties and interpretations
(1) Upon its entry into force, the present Convention supersedes the International Convention for the Prevention of Pollution of the Sea by Oil, 1954, as amended, as between Parties to that Convention.
(2) Nothing in the present Convention shall prejudice the codification and development of the law of the sea by the United Nations Conference on the Law of the Sea convened pursuant to Resolution 2750 C(XXV) of the General Assembly of the United Nations nor the present or future claims and legal views of any State concerning the law of the sea and the nature and extent of coastal and flag State jurisdiction.
(3) The term “jurisdiction” in the present Convention shall be construed in the light of international law in force at the time of application or interpretation of the present Convention.
Article 10. Settlement of disputes
Any dispute between two or more Parties to the Convention concerning the interpretation or application of the present Convention shall, if settlement by negotiation between the Parties involved has not
been possible, and if these Parties do not otherwise agree, be submitted upon request of any of them to arbitration as set out in Protocol II to the present Convention.
Article 11. Communication of information
(1) The Parties to the Convention undertake to communicate to the Organization:
(a) the text of laws, orders, decrees and regulations and other instruments which have been promulgated on the various matters within the scope of the present Convention;
(b) a list of non-governmental agencies which are authorized to act on their behalf in matters relating to the design, construction and equipment of ships carrying harmful substances in accordance with the provisions of the Regulations;*
(c) a sufficient number of specimens of their certificates issued under the provisions of the Regulations;
(d) a list of reception facilities including their location, capacity and available facilities and other characteristics;
(e) official reports or summaries of official reports in so far as they show the results of the application of the present Convention; and
(f) an annual statistical report, in a form standardized by the Organization, of penalties actually imposed for infringement of the present Convention.
(2) The Organization shall notify Parties of the receipt of any communications under the present Article and circulate to all Parties any information communicated to it under sub paragraphs (l)(b) to (f) of the present Article.
* The text of this subparagraph is replaced by that contained in article III of the 1978 Protocol.
Article 12. Casualties to ships
(1) Each Administration undertakes to conduct an investigation of any casualty occurring to any of its ships subject to the provisions of the Regulations if such casualty has produced a major deleterious effect upon the marine environment.
(2) Each Party to the Convention undertakes to supply the Organization with information concerning the findings of such investigation, when it judges that such information may assist in determining what changes in the present Convention might be desirable.
Article 13. Signature, ratification, acceptance, approval and accession
(1) The present Convention shall remain open for signature at the Headquarters of the Organization from 15 January 1974 until 31 December 1974 and shall thereafter remain open for accession. States may become Parties to the present Convention by:
(a) signature without reservation as to ratification, acceptance or approval; or
(b) signature subject to ratification, acceptance or approval, followed by ratification, acceptance or approval; or
(c) accession.
(2) Ratification, acceptance, approval or accession shall be effected by the deposit of an instrument to that effect with the Secretary-General of the Organization.
(3) The Secretary-General of the Organization shall inform all States which have signed the present Convention or acceded to it of any signature or of the deposit of any new instrument of ratification, acceptance, approval or accession and the date of its deposit.
Article 14. Optional Annexes
(1) A State may at the time of signing, ratifying, accepting, approving or acceding to the present Convention declare that it does not accept any one or all of Annexes III, IV and V (hereinafter referred to as “Optional Annexes”) of the present Convention. Subject to the above, Parties to the Convention shall be bound by any Annex in its entirety.
(2) A State which has declared that it is not bound by an Optional Annex may at any time accept such Annex by depositing with the Organization an instrument of the kind referred to in Article 13(2).
(3) A State which makes a declaration under paragraph (1) of the present Article in respect of an Optional Annex and which has not subsequently accepted that Annex in accordance with paragraph (2) of the present Article shall not be under any obligation nor entitled to claim any privileges under the present Convention in respect of matters related to such Annex and all references to Parties in the present Convention shall not include that State in so far as matters related to such Annex are concerned.
(4) The Organization shall inform the States which have signed or acceded to the present Convention of any declaration under the present Article as well as the receipt of any instrument deposited in accordance with the provisions of paragraph (2) of the present article.
Article 15. Entry into force
(1) The present Convention shall enter into force twelve months after the date on which not less than 15 States, the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of the world’s merchant shipping, have become parties to it in accordance with article 13.
(2) An optional Annex shall enter into force twelve months after the date on which the conditions stipulated in paragraph (1) of the present Article have been satisfied in relation to that Annex.
(3) The Organization shall inform the States which have signed the present Convention or acceded to it of the date on which it enters into force and of the date on which an Optional Annex enters into force in accordance with paragraph (2) of the present article.
(4) For States which have deposited an instrument of ratification, acceptance, approval or accession in respect of the present Convention or any Optional Annex after the requirements for entry into force thereof have been met but prior to the date of entry into force, the ratification, acceptance, approval or accession shall take effect on the date of entry into force of the Convention of such Annex or three months after the date of deposit of the instrument whichever is the later date.
(5) For States which have deposited an instrument of ratification, acceptance, approval or accession after the date on which the Convention or an Optional Annex entered into force, the Convention or the Optional Annex shall become effective three months after the date of deposit of the instrument.
(6) After the date on which all the conditions required under Article 16 to bring an amendment to the present Convention or an Optional Annex into force have been fulfilled, any instrument of ratification, acceptance, approval or accession deposited shall apply to the Convention or Annex as amended.
Article 16. Amendments
(1) The present Convention may be amended by any of the procedures specified in the following paragraphs.
(2) Amendments after consideration by the Organization:
(a) any amendment proposed by a Party to the Convention shall be submitted to the Organization and circulated by its Secretary-General to all Members of the Organization and all Parties at least six months prior to its consideration;
(b) any amendment proposed and circulated as above shall be submitted to an appropriate body by the Organization for consideration;
(c) Parties to the Convention, whether or not Members of the Organization, shall be entitled to participate in the proceedings of the appropriate body;
(d) amendments shall be adopted by a two-thirds majority of only the Parties to the Convention present and voting;
(e) if adopted in accordance with sub-paragraph (d) above, amendments shall be communicated by the Secretary-General of the Organization to all the Parties to the Convention for acceptance;
(f) an amendment shall be deemed to have been accepted in the following circumstances:
(i) an amendment to an Article of the Convention shall be deemed to have been accepted on the date on which it is accepted by two-thirds of the Parties, the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of the world’s merchant fleet;
(ii) an amendment to an Annex to the Convention shall be deemed to have been accepted in accordance with the procedure specified in sub-paragraph (f)(iii) unless the appropriate body, at the time of its adoption, determines that the amendment shall be deemed to have been accepted on the date on which it is accepted by two-thirds of the Parties, the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of the world’s merchant fleet. Nevertheless, at any time before the entry into force of an amendment to an Annex to the Convention, a Party may notify the Secretary-General of the Organization that its express approval will be necessary before the amendment enters into force for it. The latter shall bring such notification and the date of its receipt to the notice of Parties;
(iii) an amendment to an Appendix to an Annex to the Convention shall be deemed to have been accepted at the end of a period to be determined by the appropriate body at the time of its adoption, which period shall be not less than ten months, unless within that period an objection is communicated to the Organization by not less than one-third of the Parties or by the Parties the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of the world’s merchant fleet whichever condition is fulfilled;
(iv) an amendment to Protocol I to the Convention shall be subject to the same procedures as for the amendments to the Annexes to the Convention, as provided for in sub-paragraphs (f)(ii) or (f)(iii) above;
(v) an amendment to Protocol II to the Convention shall be subject to the same procedures as for the amendments to an Article of the Convention, as provided for in sub-paragraph (f)(i) above;
(g) the amendment shall enter into force under the following conditions:
(i) in the case of an amendment to an Article of the Convention, to Protocol II, or to Protocol I or to an Annex to the Convention not under the procedure specified in sub-paragraph (f)(iii), the amendment accepted in conformity with the foregoing provisions shall enter into force six months after the date of its acceptance with respect to the Parties which have declared that they have accepted it;
(ii) in the case of an amendment to Protocol I, to an Appendix to an Annex or to an Annex to the Convention under the procedure specified in sub-paragraph (f)(iii), the amendment deemed to have been accepted in accordance with the foregoing conditions shall enter into force six months after its acceptance for all the Parties with the exception of those which, before that date, have made a declaration that they do not accept it or a declaration under sub-paragraph (f)(ii), that their express approval is necessary.
(3) Amendment by a Conference:
(a) Upon the request of a Party, concurred in by at least one-third of the Parties, the Organization shall convene a Conference of Parties to the Convention to consider amendments to the present Convention.
(b) Every amendment adopted by such a Conference by a two-thirds majority of those present and voting of the Parties shall be communicated by the Secretary-General of the Organization to all Contracting Parties for their acceptance.
(c) Unless the Conference decides otherwise, the amendment shall be deemed to have been accepted and to have entered into force in accordance with the procedures specified for that purpose in paragraph (2)(f) and (g) above.
(4) (a) In the case of an amendment to an Optional Annex, a reference in the present article to a “Party to the Convention” shall be deemed to mean a reference to a Party bound by that Annex.
(b) Any Party which has declined to accept an amendment to an Annex shall be treated as a non-Party only for the purpose of application of that Amendment.
(5) The adoption and entry into force of a new Annex shall be subject to the same procedures as for the adoption and entry into force of an amendment to an Article of the Convention.
(6) Unless expressly provided otherwise, any amendment to the present Convention made under this Article, which relates to the structure of a ship, shall apply only to ships for which the building contract is placed, or in the absence of a building contract, the keel of which is laid, onor after the date on which the amendment comes into force.
(7) Any amendment to a Protocol or to an Annex shall relate to the substance of that Protocol or Annex and shall be consistent with the Articles of the present Convention.
(8) The Secretary-General of the Organization shall inform all Parties of any amendments which enter into force under the present Article, together with the date on which each such amendment enters into force.
(9) Any declaration of acceptance or of objection to an amendment under the present Article shall be notified in writing to the Secretary-General of the Organization. The latter shall bring such notification and the date of its receipt to the notice of the Parties to the Convention.
Article 17. Promotion of technical co-operation
The Parties to the Convention shall promote, in consultation with the Organization and other international bodies, with assistance and co-ordination by the Executive Director of the United Nations Environment Programme, support for those Parties which request technical assistance for:
(a) the training of scientific and technical personnel;
(b) the supply of necessary equipment and facilities for reception and monitoring;
(c) the facilitation of other measures and arrangements to prevent or mitigate pollution of the marine environment by ships; and
(d) the encouragement of research;
preferably within the countries concerned, so furthering the aims and purposes of the present Convention.
Article 18. Denunciation
(1) The present Convention or any Optional Annex may be denounced by any Parties to the Convention
at any time after the expiry of five years from the date on which the Convention or such Annex enters into force for that Party.
(2) Denunciation shall be effected by notification in writing to the Secretary-General of the Organization who shall inform all the other Parties of any such notification received and of the date of its receipt as well as the date on which such denunciation takes effect.
(3) A denunciation shall take effect twelve months after receipt of the notification of denunciation by the Secretary-General of the Organization or after the expiry of any other longer period which may be indicated in the notification.
Article 19. Deposit and registration
(1) The present Convention shall be deposited with the Secretary-General of the Organization who shall transmit certified true copies thereof to all States which have signed the present Convention or acceded to it.
(2) As soon as the present Convention enters into force, the text shall be transmitted by the Secretary-General of the Organization to the Secretary-General of the United Nations for registration and publication, in accordance with Article 102 of the Charter of the United Nations.
Article 20. Languages
The present Convention is established in a single copy in the English, French, Russian and Spanish languages, each text being equally authentic. Official translations in the Arabic, German, Italian and Japanese languages shall be prepared and deposited with the signed original.
In witness whereof the undersigned* being duly authorized by their respective Governments for that purpose have signed the present Convention.
Done at London this second day of November, one thousand nine hundred and seventy-three.
* Signatures omitted
Annex I of MARPOL 73/78
CHAPTER 1 – GENERAL
Regulation 1
Definitions
For the purposes of this Annex:
1 Oil means petroleum in any form including crude oil, fuel oil, sludge, oil refuse and refined products (other than those petrochemicals which are subject to the provisions of Annex II of the present Convention) and, without limiting the generality of the foregoing, includes the substances listed in appendix I to this Annex.
2 Crude oil means any liquid hydrocarbon mixture occurring naturally in the earth whether or not treated to render it suitable for transportation and includes:
.1 crude oil from which certain distillate fractions may have been removed; and
.2 crude oil to which certain distillate fractions may have been added.
3 Oily mixture means a mixture with any oil content.
4 Oil fuel means any oil used as fuel in connection with the propulsion and auxiliary machinery of the ship in which such oil is carried.
5 Oil tanker means a ship constructed or adapted primarily to carry oil in bulk in its cargo spaces and includes combination carriers, any “NLS tanker” as defined in Annex II of the present Convention and any gas carrier as defined in regulation 3.20 of chapter II-1 of SOLAS 74 (as amended), when carrying a cargo or part cargo of oil in bulk.
6 Crude oil tanker means an oil tanker engaged in the trade of carrying crude oil.
7 Product carrier means an oil tanker engaged in the trade of carrying oil other than crude oil.
8 Combination carrier means a ship designed to carry either oil or solid cargoes in bulk.
9 Major conversion:
.1 means a conversion of a ship:
.1.1 which substantially alters the dimensions or carrying capacity of the ship; or
.1.2 which changes the type of the ship; or
.1.3 the intent of which in the opinion of the Administration is substantially to prolong its life; or
.1.4 which otherwise so alters the ship that, if it were a new ship, it would become subject to relevant provisions of the present Convention not applicable to it as an existing ship.
.2 Notwithstanding the provisions of this definition:
.2.1 conversion of an oil tanker of 20,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, to meet the requirements of regulation 18 of this Annex shall not be deemed to constitute a major conversion for the purpose of this Annex; and
.2.2 conversion of an oil tanker delivered before 6 July 1996, as defined in regulation 1.28.5, to meet the requirements of regulation 19 or 20 of this Annex shall not be deemed to constitute a major conversion for the purpose of this Annex.
10 Nearest land. The term from the nearest land means from the baseline from which the territorial sea of the territory in question is established in accordance with international law, except that, for the purposes of the present Convention “from the nearest land” off the north-eastern coast of Australia shall mean from a line drawn from a point on the coast of Australia in:
latitude 11°00′ S, longitude 142°08′ E
to a point in latitude 10°35′ S, longitude 141°55′ E,
thence to a point latitude 10°00′ S, longitude 142°00′ E,
thence to a point latitude 9°10′ S, longitude 143°52′ E,
thence to a point latitude 9°00′ S, longitude 144°30′ E,
thence to a point latitude 10°41′ S, longitude 145°00′ E,
thence to a point latitude 13°00′ S, longitude 145°00′ E,
thence to a point latitude 15°00′ S, longitude 146°00′ E,
thence to a point latitude 17°30′ S, longitude 147°00′ E,
thence to a point latitude 21°00′ S, longitude 152°55′ E,
thence to a point latitude 24°30′ S, longitude 154°00′ E,
thence to a point on the coast of Australia
in latitude 24°42′ S, longitude 153°15′ E.
11 Special area means a sea area where for recognized technical reasons in relation to its oceanographical and ecological condition and to the particular character of its traffic the adoption of special mandatory methods for the prevention of sea pollution by oil is required.
For the purposes of this Annex, the special areas are defined as follows:
.1 the Mediterranean Sea area means the Mediterranean Sea proper including the gulfs and seas therein with the boundary between the Mediterranean and the Black Sea constituted by the 41° N paralle
l and bounded to the west by the Straits of Gibraltar at the meridian of 005°36′ W;
.2 the Baltic Sea area means the Baltic Sea proper with the Gulf of Bothnia, the Gulf of Finland and the entrance to the Baltic Sea bounded by the parallel of the Skaw in the Skagerrak at 57°44.8′ N;
.3 the Black Sea area means the Black Sea proper with the boundary between the Mediterranean Sea and the Black Sea constituted by the parallel 41° N;
.4 the Red Sea area means the Red Sea proper including the Gulfs of Suez and Aqaba bounded at the south by the rhumb line between Ras si Ane (12°28.5′ N, 043°19.6′ E) and Husn Murad (12°40.4′ N, 043°30.2′ E);
.5 the Gulfs area means the sea area located north-west of the rhumb line between Ras al Hadd (22°30′ N, 059°48′ E) and Ras al Fasteh (25°04′ N, 061° 25′ E);
.6 the Gulf of Aden area means that part of the Gulf of Aden between the Red Sea and the Arabian Sea bounded to the west by the rhumb line between Ras si Ane (12°28.5’N, 043°19.6′ E) and Husn Murad (12°40.4′ N, 043°30.2′ E) and to the east by the rhumb line between Ras Asir (11°50′ N, 051°16.9′ E) and the Ras Fartak (15°35′ N, 052°13.8′ E);
.7 the Antarctic area means the sea area south of latitude 60°S; and
.8 the North West European waters include the North Sea and its approaches, the Irish Sea and its approaches, the Celtic Sea, the English Channel and its approaches and part of the North East Atlantic immediately to the west of Ireland. The area is bounded by lines joining the following points:
48° 27′ N on the French coast
48° 27′ N; 006° 25′ W
49° 52′ N; 007° 44′ W
50° 30′ N; 012° W
56° 30′ N; 012° W
62° N; 003° W
62° N on the Norwegian coast
57° 44.8′ N on the Danish and Swedish coasts
.9 the Oman area of the Arabian Sea means the sea area enclosed by the following coordinates:
22° 30.00′ N; 059° 48.00′ E
23° 47.27′ N; 060° 35.73′ E
22° 40.62′ N; 062° 25.29′ E
21° 47.40′ N; 063° 22.22′ E
20° 30.37′ N; 062° 52.41′ E
19° 45.90′ N; 062° 25.97′ E
18° 49.92′ N; 062° 02.94′ E
17° 44.36′ N; 061° 05.53′ E
16° 43.71′ N; 060° 25.62′ E
16° 03.90′ N; 059° 32.24′ E
15° 15.20′ N; 058° 58.52′ E
14° 36.93′ N; 058° 10.23′ E
14° 18.93′ N; 057° 27.03′ E
14° 11.53′ N; 056° 53.75′ E
13° 53.80′ N; 056° 19.24′ E
13° 45.86′ N; 055° 54.53′ E
14° 27.38′ N; 054° 51.42′ E
14° 40.10′ N; 054° 27.35’E
14° 46.21′ N; 054° 08.56′ E
15° 20.74′ N; 053° 38.33′ E
15° 48.69′ N; 053° 32.07′ E
16° 23.02′ N; 053° 14.82′ E
16° 39.06′ N; 053° 06.52′ E
.10 the Southern South African waters means the sea area enclosed by the following co-ordinates:
31° 14′ S; 017° 50′ E
31° 30′ S; 017° 12′ E
32° 00′ S; 017° 06′ E
32° 32′ S; 016° 52′ E
34° 06′ S; 017° 24′ E
36° 58′ S; 020° 54′ E
36° 00′ S; 022° 30′ E
35° 14′ S; 022° 54′ E
34° 30′ S; 026° 00′ E
33° 48′ S; 027° 25′ E
33° 27′ S; 027°12′ E”
12 Instantaneous rate of discharge of oil content means the rate of discharge of oil in litres per hour at any instant divided by the speed of the ship in knots at the same instant.
13 Tank means an enclosed space which is formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.
14 Wing tank means any tank adjacent to the side shell plating.
15 Centre tank means any tank inboard of a longitudinal bulkhead.
16 Slop tank means a tank specifically designated for the collection of tank drainings, tank washings and other oily mixtures.
17 Clean ballast means the ballast in a tank which since oil was last carried therein, has been so cleaned that effluent therefrom if it were discharged from a ship which is stationary into clean calm water on a clear day would not produce visible traces of oil on the surface of the water or on adjoining shorelines or cause a sludge or emulsion to be deposited beneath the surface of the water or upon adjoining shorelines. If the ballast is discharged through an oil discharge monitoring and control system approved by the Administration, evidence based on such a system to the effect that the oil content of the effluent did not exceed 15 parts per million shall be determinative that the ballast was clean, notwithstanding the presence of visible traces.
18 Segregated ballast means the ballast water introduced into a tank which is completely separated from the cargo oil and oil fuel system and which is permanently allocated to the carriage of ballast or to the carriage of ballast or cargoes other than oil or noxious liquid substances as variously defined in the Annexes of the present Convention.
19 Length (L) means 96 per cent of the total length on a waterline at 85 per cent of the least moulded depth measured from the top of the keel, or the length from the foreside of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to the designed waterline. The length (L) shall be measured in metres.
20 Forward and after perpendiculars shall be taken at the forward and after ends of the length (L). The forward perpendicular shall coincide with the foreside of the stem on the waterline on which the length is measured.
21 Amidships is at the middle of the length (L).
22 Breadth (B) means the maximum breadth of the ship, measured amidships to the moulded line of the frame in a ship with a metal shell and to the outer surface of the hull in a ship with a shell of any other material. The breadth (B) shall be measured in metres.
23 Deadweight (DW) means the difference in tonnes between the displacement of a ship in water of a relative den
sity of 1.025 at the load waterline corresponding to the assigned summer freeboard and the lightweight of the ship.
24 Lightweight means the displacement of a ship in metric tons without cargo, fuel, lubricating oil, ballast water, fresh water and feed water in tanks, consumable stores, and passengers and crew and their effects.
25 Permeability of a space means the ratio of the volume within that space which is assumed to be occupied by water to the total volume of that space.
26 Volumes and areas in a ship shall be calculated in all cases to moulded lines.
27 Anniversary date means the day and the month of each year, which will correspond to the date of expiry of the International Oil Pollution Prevention Certificate.
28.1 Ship delivered on or before 31 December 1979 means a ship:
.1 for which the building contract is placed on or before 31 December 1975; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or before 30 June 1976; or
.3 the delivery of which is on or before 31 December 1979; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed on or before 31 December 1975; or
.4.2 in the absence of a contract, the construction work of which is begun on or before 30 June 1976; or
.4.3 which is completed on or before 31 December 1979.
28.2 Ship delivered after 31 December 1979 means a ship:
.1 for which the building contract is placed after 31 December 1975; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction after 30 June 1976; or
.3 the delivery of which is after 31 December 1979; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed after 31 December 1975; or
.4.2 in the absence of a contract, the construction work of which is begun after 30 June 1976; or
.4.3 which is completed after 31 December 1979.
28.3 Oil tanker delivered on or before 1 June 1982 means an oil tanker:
.1 for which the building contract is placed on or before 1 June 1979; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or before 1 January 1980; or
.3 the delivery of which is on or before 1 June 1982; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed on or before 1 June 1979; or
.4.2 in the absence of a contract, the construction work of which is begun on or before 1 January 1980; or
.4.3 which is completed on or before 1 June 1982
28.4 Oil tanker delivered after 1 June 1982 means an oil tanker:
.1 for which the building contract is placed after 1 June 1979; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction after 1 January 1980; or
.3 the delivery of which is after 1 June 1982; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed after 1 June 1979; or
.4.2 in the absence of a contract, the construction work of which is begun after 1 January 1980; or
.4.3 which is completed after 1 June 1982.
28.5 Oil tanker delivered before 6 July 1996 means an oil tanker:
.1 for which the building contract is placed before 6 July 1993; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction before 6 January 1994; or
.3 the delivery of which is before 6 July 1996; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed before 6 July 1993; or
.4.2 in the absence of a contract, the construction work of which is begun before 6 January 1994; or
.4.3 which is completed before 6 July 1996.
28.6 Oil tanker delivered on or after 6 July 1996 means an oil tanker:
.1 for which the building contract is placed on or after 6 July 1993; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 6 January 1994; or
.3 the delivery of which is on or after 6 July 1996; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed on or after 6 July 1993; or
.4.2 in the absence of a contract, the construction work of which is begun on or after 6 January 1994; or
.4.3 which is completed on or after 6 July 1996.
28.7 Oil tanker delivered on or after 1 February 2002 means an oil tanker:
.1 for which the building contract is placed on or after 1 February 1999; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 1 August 1999; or
.3 the delivery of which is on or after 1 February 2002; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed on or after 1 February 1999; or
.4.2 in the absence of a contract, the construction work of which is begun on or after 1 August 1999; or
.4.3 which is completed on or after 1 February 2002.
28.8 Oil tanker delivered on or after 1 January 2010 means an oil tanker:
.1 for which the building contract is placed on or after 1 January 2007; or
.2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 1 July 2007; or
.3 the delivery of which is on or after 1 January 2010; or
.4 which has undergone a major conversion:
.4.1 for which the contract is placed on or after 1 January 2007; or
.4.2 in the absence of a contract, the construction work of which is begun on or after 1 July 2007; or
.4.3 which is completed on or
after 1 January 2010.
28.9 ship delivered on or after 1 August 2010 means a ship:
.1 for which the building contract is placed on or after 1 August 2007; or
.2 in the absence of a building contract, the keels of which are laid or which are at a similar stage of construction on or after 1 February 2008; or
.3 the delivery of which is on or after 1 August 2010; or
.4 which have undergone a major conversion:
.1 for which the contract is placed after 1 August 2007; or
.2 in the absence of contract, the construction work of which is begun after 1 February 2008; or
.3 which is completed after 1 August 2010.
29 Parts per million (ppm) means parts of oil per million parts of water by volume.
30 Constructed means a ship the keel of which is laid or which is at a similar stage of construction.
Regulation 2
Application
1 Unless expressly provided otherwise, the provisions of this Annex shall apply to all ships.
2 In ships other than oil tankers fitted with cargo spaces which are constructed and utilized to carry oil in bulk of an aggregate capacity of 200 cubic metres or more, the requirements of regulations 16, 26.4, 29, 30, 31, 32, 34 and 36 of this Annex for oil tankers shall also apply to the construction and operation of those spaces, except that where such aggregate capacity is less than 1,000 cubic metres the requirements of regulation 34.6 of this Annex may apply in lieu of regulations 29, 31 and 32.
3 Where a cargo subject to the provisions of Annex II of the present Convention is carried in a cargo space of an oil tanker, the appropriate requirements of Annex II of the present Convention shall also apply.
4 The requirements of regulations 29, 31 and 32 of this Annex shall not apply to oil tankers carrying asphalt or other products subject to the provisions of this Annex, which through their physical properties inhibit effective product/water separation and monitoring, for which the control of discharge under regulation 34 of this Annex shall be effected by the retention of residues on board with discharge of all contaminated washings to reception facilities.
5 Subject to the provisions of paragraph 6 of this regulation, regulations 18.6 to 18.8 of this Annex shall not apply to an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, solely engaged in specific trades between:
.1 ports or terminals within a State Party to the present Convention; or
.2 ports or terminals of States Parties to the present Convention, where:
.2.1 the voyage is entirely within a Special Area; or
.2.2 the voyage is entirely within other limits designated by the Organization.
6 The provisions of paragraph 5 of this regulation shall only apply when the ports or terminals where cargo is loaded on such voyages are provided with reception facilities adequate for the reception and treatment of all the ballast and tank washing water from oil tankers using them and all the following conditions are complied with:
.1 subject to the exceptions provided for in regulation 4 of this Annex, all ballast water, including clean ballast water, and tank washing residues are retained on board and transferred to the reception facilities and the appropriate entry in the Oil Record Book Part II referred to in regulation 36 of this Annex is endorsed by the competent Port State Authority;
.2 agreement has been reached between the Administration and the Governments of the Port States referred to in paragraphs 5.1 or 5.2 of this regulation concerning the use of an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, for a specific trade;
.3 the adequacy of the reception facilities in accordance with the relevant provisions of this Annex at the ports or terminals referred to above, for the purpose of this regulation, is approved by the Governments of the States Parties to the present Convention within which such ports or terminals are situated; and
.4 the International Oil Pollution Prevention Certificate is endorsed to the effect that the oil tanker is solely engaged in such specific trade.
Regulation 3
Exemptions and waivers
1 Any ship such as hydrofoil, air-cushion vehicle, near-surface craft and submarine craft etc. whose constructional features are such as to render the application of any of the provisions of chapters 3 and 4 of this Annex relating to construction and equipment unreasonable or impracticable may be exempted by the Administration from such provisions, provided that the construction and equipment of that ship provides equivalent protection against pollution by oil, having regard to the service for which it is intended.
2 Particulars of any such exemption granted by the Administration shall be indicated in the Certificate referred to in regulation 7 of this Annex.
3 The Administration which allows any such exemption shall, as soon as possible, but not more than 90 days thereafter, communicate to the Organization particulars of same and the reasons therefore, which the Organization shall circulate to the Parties to the present Convention for their information and appropriate action, if any.
4 The Administration may waive the requirements of regulations 29, 31 and 32 of this Annex, for any oil tanker which engages exclusively on voyages both of 72 hours or less in duration and within 50 nautical miles from the nearest land, provided that the oil tanker is engaged exclusively in trades between ports or terminals within a State Party to the present Convention. Any such waiver shall be subject to the requirement that the oil tanker shall retain on board all oily mixtures for subsequent discharge to reception facilities and to the determination by the Administration that facilities available to receive such oily mixtures are adequate.
5 The Administration may waive the requirements of regulations 31 and 32 of this Annex for oil tankers other than those referred to in paragraph 4 of this regulation in cases where:
.1 the tanker is an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, of 40,000 tonnes deadweight or above, as referred to in regulation 2.5 of this Annex, solely engaged in specific trades, and the conditions specified in regulation 2.6 of this Annex are complied with; or
.2 the tanker is engaged exclusively in one or more of the following categories of voyages:
.2.1 voyages within special areas; or
.2.2 voyages within 50 nautical miles from the nearest land outside special areas where the tanker is engaged in:
.2.2.1 trades between ports or terminals of a State Party to the present Convention; or
.2.2..2 restricted voyage
s as determined by the Administration, and of 72 hours or less in duration;
provided that all of the following conditions are complied with:
.2.3 all oily mixtures are retained on board for subsequent discharge to reception facilities;
.2.4 for voyages specified in paragraph 5.2.2 of this regulation, the Administration has determined that adequate reception facilities are available to receive such oily mixtures in those oil loading ports or terminals the tanker calls at;
.2.5 the International Oil Pollution Prevention Certificate, when required, is endorsed to the effect that the ship is exclusively engaged in one or more of the categories of voyages specified in paragraphs 5.2.1 and 5.2.2.2 of this regulation; and
.2.6 the quantity, time and port of discharge are recorded in the Oil Record Book.
Regulation 4
Exceptions
Regulations 15 and 34 of this Annex shall not apply to:
.1 the discharge into the sea of oil or oily mixture necessary for the purpose of securing the safety of a ship or saving life at sea; or
.2 the discharge into the sea of oil or oily mixture resulting from damage to a ship or its equipment:
.2.1 provided that all reasonable precautions have been taken after the occurrence of the damage or discovery of the discharge for the purpose of preventing or minimizing the discharge; and
.2.2 except if the owner or the master acted either with intent to cause damage, or recklessly and with knowledge that damage would probably result; or
.3 the discharge into the sea of substances containing oil, approved by the Administration, when being used for the purpose of combating specific pollution incidents in order to minimize the damage from pollution. Any such discharge shall be subject to the approval of any Government in whose jurisdiction it is contemplated the discharge will occur.
Regulation 5
Equivalents
1 The Administration may allow any fitting, material, appliance or apparatus to be fitted in a ship as an alternative to that required by this Annex if such fitting, material, appliance or apparatus is at least as effective as that required by this Annex. This authority of the Administration shall not extend to substitution of operational methods to effect the control of discharge of oil as equivalent to those design and construction features which are prescribed by regulations in this Annex.
2 The Administration which allows a fitting, material, appliance or apparatus to be fitted in a ship as an alternative to that required by this Annex shall communicate particulars thereof to the Organization for circulation to the Parties to the Convention for their information and appropriate action, if any.
CHAPTER 2 – SURVEYS AND CERTIFICATION
Regulation 6
Surveys
1 Every oil tanker of 150 gross tonnage and above, and every other ship of 400 gross tonnage and above shall be subject to the surveys specified below:
.1 an initial survey before the ship is put in service or before the Certificate required under regulation 7 of this Annex is issued for the first time, which shall include a complete survey of its structure, equipment, systems, fittings, arrangements and material in so far as the ship is covered by this Annex. This survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with the applicable requirements of this Annex;
.2 a renewal survey at intervals specified by the Administration, but not exceeding 5 years, except where regulation 10.2.2, 10.5, 10.6 or 10.7 of this Annex is applicable. The renewal survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with applicable requirements of this Annex;
.3 an intermediate survey within 3 months before or after the second anniversary date or within 3 months before or after the third anniversary date of the Certificate which shall take the place of one of the annual surveys specified in paragraph 1.4 of this regulation. The intermediate survey shall be such as to ensure that the equipment and associated pump and piping systems, including oil discharge monitoring and control systems, crude oil washing systems, oily-water separating equipment and oil filtering systems, fully comply with the applicable requirements of this Annex and are in good working order. Such intermediate surveys shall be endorsed on the Certificate issued under regulation 7 or 8 of this Annex;
.4 an annual survey within 3 months before or after each anniversary date of the Certificate, including a general inspection of the structure, equipment, systems, fittings, arrangements and material referred to in paragraph 1.1 of this regulation to ensure that they have been maintained in accordance with paragraphs 4.1 and 4.2 of this regulation and that they remain satisfactory for the service for which the ship is intended. Such annual surveys shall be endorsed on the Certificate issued under regulation 7 or 8 of this Annex; and
.5 an additional survey either general or partial, according to the circumstances, shall be made after a repair resulting from investigations prescribed in paragraph 4.3 of this regulation, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory and that the ship complies in all respects with the requirements of this Annex.
2 The Administration shall establish appropriate measures for ships which are not subject to the provisions of paragraph 1 of this regulation in order to ensure that the applicable provisions of this Annex are complied with.
3.1 Surveys of ships as regards the enforcement of the provisions of this Annex shall be carried out by officers of the Administration. The Administration may, however, entrust the surveys either to surveyors nominated for the purpose or to organizations recognized by it. Such organizations shall comply with the guidelines adopted by the Organization by resolution A.739(18), as may be amended by the Organization, and the specifications adopted by the Organization by resolution A.789(19), as may be amended by the Organization, provided that such amendments are adopted, brought into force and take effect in accordance with the provisions of article 16 of the present Convention concerning the amendment procedures applicable to this Annex.
3.2 An Administration nominating surveyors or recognizing organizations to conduct surveys as set forth in paragraph 3.1 of this regulation shall, as a minimum, empower any nominated surveyor or recognized organization to:
.1 require repairs to a ship; and
.2 carry out surveys, if requested by the appropriate authorities of a port State.
The Administration shall notify the Organi
zation of the specific responsibilities and conditions of the authority delegated to the nominated surveyors or recognized organizations, for circulation to Parties to the present Convention for the information of their officers.
3.3 When a nominated surveyor or recognized organization determines that the condition of the ship or its equipment does not correspond substantially with the particulars of the Certificate or is such that the ship is not fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment, such surveyor or organization shall immediately ensure that corrective action is taken and shall in due course notify the Administration. If such corrective action is not taken the Certificate shall be withdrawn and the Administration shall be notified immediately; and if the ship is in a port of another Party, the appropriate authorities of the port State shall also be notified immediately. When an officer of the Administration, a nominated surveyor or a recognized organization has notified the appropriate authorities of the port State, the Government of the port State concerned shall give such officer, surveyor or organization any necessary assistance to carry out their obligations under this regulation. When applicable, the Government of the port State concerned shall take such steps as will ensure that the ship shall not sail until it can proceed to sea or leave the port for the purpose of proceeding to the nearest appropriate repair yard available without presenting an unreasonable threat of harm to the marine environment.
3.4 In every case, the Administration concerned shall fully guarantee the completeness and efficiency of the survey and shall undertake to ensure the necessary arrangements to satisfy this obligation.
4.1 The condition of the ship and its equipment shall be maintained to conform with the provisions of the present Convention to ensure that the ship in all respects will remain fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment.
4.2 After any survey of the ship under paragraph 1 of this regulation has been completed, no change shall be made in the structure, equipment, systems, fittings, arrangements or material covered by the survey, without the sanction of the Administration, except the direct replacement of such equipment and fittings.
4.3 Whenever an accident occurs to a ship or a defect is discovered which substantially affects the integrity of the ship or the efficiency or completeness of its equipment covered by this Annex the master or owner of the ship shall report at the earliest opportunity to the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate, who shall cause investigations to be initiated to determine whether a survey as required by paragraph 1 of this regulation is necessary. If the ship is in a port of another Party, the master or owner shall also report immediately to the appropriate authorities of the port State and the nominated surveyor or recognized organization shall ascertain that such report has been made.
Regulation 7
Issue or endorsement of certificate
1 An International Oil Pollution Prevention Certificate shall be issued, after an initial or renewal survey in accordance with the provisions of regulation 6 of this Annex, to any oil tanker of 150 gross tonnage and above and any other ships of 400 gross tonnage and above which are engaged in voyages to ports or offshore terminals under the jurisdiction of other Parties to the present Convention.
2 Such certificate shall be issued or endorsed as appropriate either by the Administration or by any persons or organization duly authorized by it. In every case the Administration assumes full responsibility for the certificate.
Regulation 8
Issue or endorsement of certificate by another Government
1 The Government of a Party to the present Convention may, at the request of the Administration, cause a ship to be surveyed and, if satisfied that the provisions of this Annex are complied with, shall issue or authorize the issue of an International Oil Pollution Prevention Certificate to the ship and where appropriate, endorse or authorize the endorsement of that certificate on the ship in accordance with this Annex.
2 A copy of the certificate and a copy of the survey report shall be transmitted as soon as possible to the requesting Administration.
3 A certificate so issued shall contain a statement to the effect that it has been issued at the request of the Administration and it shall have the same force and receive the same recognition as the certificate issued under regulation 7 of this Annex.
4 No International Oil Pollution Prevention Certificate shall be issued to a ship, which is entitled to fly the flag of a State, which is not a Party.
Regulation 9
Form of certificate
The International Oil Pollution Prevention Certificate shall be drawn up in the form corresponding to the model given in appendix II to this Annex and shall be at least in English, French or Spanish. If an official language of the issuing country is also used, this shall prevail in case of a dispute or discrepancy.
Regulation 10
Duration and validity of certificate
1 An International Oil Pollution Prevention Certificate shall be issued for a period specified by the Administration, which shall not exceed five years.
2.1 Notwithstanding the requirements of paragraph 1 of this regulation, when the renewal survey is completed within 3 months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing certificate.
2.2 When the renewal survey is completed after the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing certificate.
2.3 When the renewal survey is completed more than 3 months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of completion of the renewal survey.
3 If a certificate is issued for a period of less than 5 years, the Administration may extend the validity of the certificate beyond the expiry date to the maximum period specified in paragraph 1 of this regulation, provided that the surveys referred to in regulations 6.1.3 and 6.1.4 of this Annex applicable when a certificate is issued for a period of 5 years are carried out as appropriate.
4 If a renewal survey has been completed and a new certificate cannot be issued or placed on board the ship before the expiry date of the existing certificate, the person or organization authorized by the Administration may endorse the existing certificate and such a certificate shall be accepted as valid for a further period which shall not exc
eed 5 months from the expiry date.
5 If a ship at the time when a certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the certificate but this extension shall be granted only for the purpose of allowing the ship to complete its voyage to the port in which it is to be surveyed, and then only in cases where it appears proper and reasonable to do so. No certificate shall be extended for a period longer than 3 months, and a ship to which an extension is granted shall not, on its arrival in the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port without having a new certificate. When the renewal survey is completed, the new certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing certificate before the extension was granted.
6 A certificate issued to a ship engaged on short voyages which has not been extended under the foregoing provisions of this regulation may be extended by the Administration for a period of grace of up to one month from the date of expiry stated on it. When the renewal survey is completed, the new certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing certificate before the extension was granted.
7 In special circumstances, as determined by the Administration, a new certificate need not be dated from the date of expiry of the existing certificate as required by paragraphs 2.2, 5 or 6 of this regulation. In these special circumstances, the new certificate shall be valid to a date not exceeding 5 years from the date of completion of the renewal survey.
8 If an annual or intermediate survey is completed before the period specified in regulation 6 of this Annex, then:
.1 the anniversary date shown on the certificate shall be amended by endorsement to a date which shall not be more than 3 months later than the date on which the survey was completed;
.2 the subsequent annual or intermediate survey required by regulation 6.1 of this Annex shall be completed at the intervals prescribed by that regulation using the new anniversary date; and
.3 the expiry date may remain unchanged provided one or more annual or intermediate surveys, as appropriate, are carried out so that the maximum intervals between the surveys prescribed by regulation 6.1 of this Annex are not exceeded.
9 A certificate issued under regulation 7 or 8 of this Annex shall cease to be valid in any of the following cases:
.1 if the relevant surveys are not completed within the periods specified under regulation 6.1 of this Annex;
.2 if the certificate is not endorsed in accordance with regulation 6.1.3 or 6.1.4 of this Annex; or
.3 upon transfer of the ship to the flag of another State. A new certificate shall only be issued when the Government issuing the new certificate is fully satisfied that the ship is in compliance with the requirements of regulations 6.4.1 and 6.4.2 of this Annex. In the case of a transfer between Parties, if requested within 3 months after the transfer has taken place, the Government of the Party whose flag the ship was formerly entitled to fly shall, as soon as possible, transmit to the Administration copies of the certificate carried by the ship before the transfer and, if available, copies of the relevant survey reports.
Regulation 11
Port State control on operational requirements*
1 A ship when in a port or an offshore terminal of another Party is subject to inspection by officers duly authorized by such Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of pollution by oil.
2 In the circumstances given in paragraph 1 of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation have been brought to order in accordance with the requirements of this Annex.
3 Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
4 Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
* Refer to the Procedures for port State control, adopted by the Organization by resolution A.787(19) as amended by resolution A.882(21);
CHAPTER 3 – REQUIREMENTS FOR MACHINERY SPACES OF ALL SHIPS
PART A CONSTRUCTION
Regulation 12
Tanks for oil residues (sludge)
1 Every ship of 400 gross tonnage and above shall be provided with a tank or tanks of adequate capacity, having regard to the type of machinery and length of voyage, to receive the oil residues (sludge) which cannot be dealt with otherwise in accordance with the requirements of this Annex, such as those resulting from the purification of fuel and lubricating oils and oil leakages in the machinery spaces.
2 Piping to and from sludge tanks shall have no direct connection overboard, other than the standard discharge connection referred to in regulation 13.
3 In ships delivered after 31 December 1979, as defined in regulation 1.28.2, tanks for oil residues shall be designed and constructed so as to facilitate their cleaning and the discharge of residues to reception facilities. Ships delivered on or before 31 December 1979, as defined in regulation 1.28.1, shall comply with this requirement as far as is reasonable and practicable.
Regulation 12A – Oil fuel tank protection
1 This regulation shall apply to all ships with an aggregate oil fuel capacity of 600 m3 and above which are delivered on or after 1 August 2010, as defined in regulation 1.28.9 of this Annex.
2 The application of this regulation in determining the location of tanks used to carry oil fuel does not govern over the provisions of regulation 19 of this Annex.
3 For the purpose of this regulation, the following definitions shall apply:
.1 “Oil fuel” means any oil used as fuel oil in connection with the propulsion and auxiliary machinery of the ship in which such oil is carried.
.2 “Load line draught (dS)” is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to the summer freeboard draught to be assigned to the ship.
.3 “Light ship draught” is the moulded draught amidships corresponding to the lightweight.
.4 “Partial load line draught (dP)” is the light ship draught plus 60% of the difference between the light ship draught and the load line draught dS. The partial load line draught (dp) shall be measured in metres.
.5 “Waterline (dB)” is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to 30% of the depth DS.
.6 “Breadth (BS)” is the greatest moulded breadth of the ship, in metres, at or below the deepest load line draught (dS).
.7 “Breadth (BB)” is the greatest moulded breadth of the ship, in metres, at or below the waterline (dB).
.8 “Depth (DS)” is the moulded depth, in metres, measured at mid-length to the upper deck at side. For the purpose of the application, “upper deck” means the highest deck to which the watertight transverse bulkheads except aft peak bulkheads extend.
.9 “Length (L)” means 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel, or the length from the foreside of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to the designed waterline. The length (L) shall be measured in metres.
.10 “Breadth (B)” means the maximum breadth of the ship, in metres, measured amidships to the moulded line of the frame in a ship with a metal shell and to the outer surface of the hull in a ship with a shell of any other material.
.11 “Oil fuel tank” means a tank in which oil fuel is carried, but excludes those tanks which would not contain oil fuel in normal operation, such as overflow tanks.
.12 “Small oil fuel tank” is an oil fuel tank with a maximum individual capacity not greater than 30 m3.
.13 “C” is the ship’s total volume of oil fuel, including that of the small oil fuel tanks, in m3, at 98% tank filling.
.14 “Oil fuel capacity” means the volume of a tank in m3, at 98% filling.
4 The provisions of this regulation shall apply to all oil fuel tanks except small oil fuel tanks, as defined in 3.12, provided that the aggregate capacity of such excluded tanks is not greater than 600 m3.
5 Individual oil fuel tanks shall not have a capacity of over 2,500 m3.
6 For ships, other than self-elevating drilling units, having an aggregate oil fuel capacity of 600 m3 and above, oil fuel tanks shall be located above the moulded line of the bottom shell plating nowhere less than the distance h as specified below:
h = B/20 m or,
h = 2.0 m, whichever is the lesser.
The minimum value of h = 0.76 m
In the turn of the bilge area and at locations without a clearly defined turn of the bilge, the oil fuel tank boundary line shall run parallel to the line of the midship flat bottom as shown in Figure 1.
Figure 1 – Oil fuel tank boundary lines for the purpose of paragraph 6
7 For ships having an aggregate oil fuel capacity of 600 m3 or more but less than 5,000 m3, oil fuel tanks shall be located inboard of the moulded line of the side shell plating, nowhere less than the distance w which, as shown in Figure 2, is measured at any cross-section at right angles to the side shell, as specified below:
w = 0.4 + 2.4 C/20,000 m
The minimum value of w = 1.0 m, however for individual tanks with an oil fuel capacity of less than 500 m3 the minimum value is 0.76 m.
8 For ships having an aggregate oil fuel capacity of 5,000 m3 and over, oil fuel tanks shall be located inboard of the moulded line of the side shell plating, nowhere less than the distance w which, as shown in Figure 2, is measured at any cross-section at right angles to the side shell, as specified below:
w = 0.5 + C/20,000 m or
w = 2.0 m, whichever is the lesser.
The minimum value of w = 1.0 m
Figure 2 – Oil fuel tank boundary lines for the purpose of paragraphs 7 and 8
9 Lines of oil fuel piping located at a distance from the ship’s bottom of less than h, as defined in paragraph 6, or from the ship’s side less than w, as defined in paragraphs 7 and 8 shall be fitted with valves or similar closing devices within or immediately adjacent to the oil fuel tank. These valves shall be capable of being brought into operation from a readily accessible enclosed space the location of which is accessible from the navigation bridge or propulsion machinery control position without traversing exposed freeboard or superstructure decks. The valves shall close in case of remote control system failure (fail in a closed position) and shall be kept closed at sea at any time when the tank contains oil fuel except that they may be opened during oil fuel transfer operations.
10 Suction wells in oil fuel tanks may protrude into the double bottom below the boundary line defined by the distance h provided that such wells are as small as practicable and the distance between the well bottom and the bottom shell plating is not less than 0.5 h.
11 Alternatively to paragraphs 6 and either 7 or 8, ships shall comply with the accidental oil fuel outflow performance standard specified below:
.1 The level of protection against oil fuel pollution in the event of collision or grounding shall be assessed on the basis of the mean oil outflow parameter as follows:
OM < 0.0157-1.14E-6·C
600 m3 ≤ C < 5,000 m3
OM < 0.010 C ≥ 5,000 m3
Where OM = mean oil outflow parameter; C = total oil fuel volume.
.2 The following general assumption shall apply when calculating the mean oil outflow parameter:
.1 the ship shall be assumed loaded to the partial load line draught dP without trim or heel;
.2 all oil fuel tanks shall be assumed loaded to 98% of their volumetric capacity;
.3 the nominal density of the oil fuel (ρn) shall generally be taken as 1,000 kg/m3. If the density of the oil fuel is specifically restricted to a lesser value, the lesser value may be applied; and
.4 for the purpose of these outflow calculations, the permeability of each oil fuel tank shall be taken as 0.99, unless proven otherwise.
.3 The following assumptions shall be used when combining the oil outflow parameters:
.1 The mean oil outflow shall be calculated independently for side damage and for bottom damage and then combined into a non-dimensional oil outflow
parameter OM, as follows:
OM = (0.4 OMS + 0.6 OMB) / C
where:
OMS = mean outflow for side damage, in m3
OMB = mean outflow for bottom damage, in m3
C = total oil fuel volume.
.2 For bottom damage, independent calculations for mean outflow shall be done for 0 m and 2.5 m tide conditions, and then combined as follows:
OMB = 0.7 OMB(0) + 0.3 OMB(2.5)
where:
OMB(0) = mean outflow for 0 m tide condition, and
OMB(2.5) = mean outflow for minus 2.5 m tide condition, in m3.
.4 The mean outflow for side damage OMS shall be calculated as follows:
………….nOMS = ∑ PS(i) ∙ OS(i) [m3]………….i
where:
i = represents each oil fuel tank under consideration;
n = total number of oil fuel tanks;
PS(i) = the probability of penetrating oil fuel tank i from side damage, calculated in accordance with paragraph 11.6 of this regulation;
OS(i) = the outflow, in m3, from side damage to oil fuel tank i, which is assumed equal to the total volume in oil fuel tank i at 98% filling.
.5 The mean outflow for bottom damage shall be calculated for each tidal condition
.1
……………….nOMB(0) = ∑ PB(i) ∙ OB(i) ∙ CDB(i) [m3]……………….i
where:
i = represents each oil fuel tank under consideration;
n = total number of oil fuel tanks;
PB(i) = the probability of penetrating oil fuel tank i from bottom damage, calculated in accordance with paragraph 11.7 of this regulation;
OB(i) = the outflow from oil fuel tank i, in m3, calculated in accordance with paragraph 11.5.3 of this regulation; and
CDB(i) = factor to account for oil capture as defined in paragraph 11.5.4.
.2
………………..nOMB(2,5) = ∑ PB(i) ∙ OB(i) ∙ CDB(i) [m3]………………..i
where:
i, n, PB(i) and CDB(i) = as defined in subparagraph .1 above
OB(i) = the outflow from oil fuel tank i, in m3, after tidal change.
.3 The oil outflow OB(i) for each oil fuel tank shall be calculated based on pressure balance principles, in accordance with the following assumptions:
.1 The ship shall be assumed stranded with zero trim and heel, with the stranded draught prior to tidal change equal to the partial load line draught dP.
.2 The oil fuel level after damage shall be calculated as follows:
hF = {(dP + tC – Zl)(ρS) }/ρn
where: hF = the height of the oil fuel surface above Zl, in m;
tC = the tidal change, in m. Reductions in tide shall be expressed as negative values;
Zl = the height of the lowest point in the oil fuel tank above the baseline, in m;
ρS = density of seawater, to be taken as 1,025 kg/m3; and,
ρn = nominal density of the oil fuel, as defined in 11.2.3.
.3 The oil outflow OB(i) for any tank bounding the bottom shell plating shall be taken not less than the following formula, but no more than the tank capacity:
OB(i) = HW . A
where:
HW = 1.0 m, when YB = 0
HW = BB/50 but not greater than 0.4 m, when YB is greater than BB/5 or 11.5 m, whichever is less
“HW” is to be measured upwards from the midship flat bottom line. In the turn of the bilge area and at locations without a clearly defined turn of the bilge, HW is to be measured from a line parallel to the midship flat bottom, as shown for distance “h” in Figure 1.
For YB values outboard BB/5 or 11.5 m, whichever is less, HW is to be linearly interpolated.
YB = the minimum value of YB over the length of the oil fuel tank, where at any given location, YB is the transverse distance between the side shell at waterline dB and the tank at or below waterline dB.
A = the maximum horizontal projected area of the oil fuel tank up to the level of HW from the bottom of the tank.
Figure 3 – Dimensions for calculation of the minimum oil outflow for the purpose of subparagraph 11.5.3.3
.4 In the case of bottom damage, a portion from the outflow from an oil fuel tank may be captured by non-oil compartments. This effect is approximated by application of the factor CDB(i) for each tank, which shall be taken as follows:
CDB(i) = 0.6 for oil fuel tanks bounded from below by non-oil compartments;
CDB(i) = 1 otherwise.
.6 The probability PS of breaching a compartment from side damage shall be calculated as follows:
.1 PS = PSL . PSV . PST
where: PSL = (1 – PSf – PSa) = probability the damage will extend into the longitudinal zone bounded by Xa and Xf;
PSV = (1 – PSu – PSl) = probability the damage will extend into the vertical zone bounded by Zl and Zu;
PST = (1 – PSy) = probability the damage will extend transversely beyond the boundary defined by y;
.2 PSa, PSf, PSu and PSl shall be determined by linear interpolation from the table of probabilities for side damage provided in 11.6.3, and PSy shall be calculated from th
e formulas provided in 11.6.3, where:
PSa = the probability the damage will lie entirely aft of location Xa/L;
PSf = the probability the damage will lie entirely forward of location Xf/L;
PSl = probability the damage will lie entirely below the tank;
PSu = probability the damage will lie entirely above the tank; and
PSy = probability the damage will lie entirely outboard the tank.
Compartment boundaries Xa, Xf, Zl, Zu and y shall be developed as follows:
Xa = the longitudinal distance from aft terminal of L to the aft most point on the compartment being considered, in m;
Xf = the longitudinal distance from aft terminal of L to the foremost point on the compartment being considered, in m;
Zl = the vertical distance from the moulded baseline to the lowest point on the compartment being considered, in m. Where Zl is greater than DS, Zl shall be taken as DS;
Zu = the vertical distance from the moulded baseline to the highest point on the compartment being considered, in m. Where Zu is greater than DS, Zu shall be taken as DS; and,
y = the minimum horizontal distance measured at right angles to the centreline between the compartment under consideration and the side shell, in m1.
In way of the turn of the bilge, y need not to be considered below a distance h above baseline, where h is lesser of B/10, 3 m or the top of the tank.
1 For symmetrical tank arrangements, damages are considered for one side of the ship only, in which case all “y” dimensions are to be measured from that side. For asymmetrical arrangements reference is made to the Explanatory Notes on matters related to the accidental oil outflow performance, adopted by the Organization by resolution MEPC.122(52).
.3 Table of Probabilities for side damage
PSy shall be calculated as follows:
PSy = (24.96 – 199.6 y/BS) (y/BS)
for y/BS ≤ 0.05
PSy = 0.749 + {5 – 44.4 (y/BS – 0.05)}{(y/BS) – 0.05} for 0.05 < y/BS < 0.1
PSy = 0.888 + 0.56 ( y/BS -0.1)
for y/BS ≥ 0.1
PSy is not to be taken greater than 1.
.7 The probability PB of breaching a compartment from bottom damage shall be calculated as follows:
.1 PB = PBL . PBT . PBV
where: PBL = (1 – PBf – PBa) = probability the damage will extend into the longitudinal zone bounded by Xa and Xf;
PBT = (1 – PBp – PBs) = probability the damage will extend into transverse zone bounded by Yp and Ys; and
PBV = (1 – PBz) = probability the damage will extend vertically above the boundary defined by z;
.2 PBa, PBf, PBp and PBs shall be determined by linear interpolation from the table of probabilities for bottom damage provided in 11.7.3, and PBz shall be calculated from the formulas provided in 11.7.3, where:
PBa = the probability the damage will lie entirely aft of location Xa/L;
PBf = the probability the damage will lie entirely forward of location Xf/L;
PBp = probability the damage will lie entirely to port of the tank;
PBs = probability the damage will lie entirely to starboard the tank; and
PBz = probability the damage will lie entirely below the tank.
Compartment boundaries Xa, Xf, Yp, Ys and z shall be developed as follows:
Xa and Xf as defined in 11.6.2;
Yp = the transverse distance from the port-most point on the compartment located at or below the waterline dB, to a vertical plane located BB/2 to starboard of the ship’s centreline;
Ys = the transverse distance from the starboard-most point on the compartment located at or below the waterline dB, to a vertical plane located BB/2 to starboard of the ship’s centreline; and
z = the minimum value of z over the length of the compartment, where, at any given longitudinal location, z is the vertical distance from the lower point of the bottom shell at that longitudinal location to the lower point of the compartment at that longitudinal location.
.3 Table of probabilities for bottom damage
PBz shall be calculated as follows:
PBz = (14.5 – 67 z/DS) (z/DS)
for z/DS ≤ 0.1
PBz = 0.78 + 1.1 {(z/DS -0.1)}
for z/DS > 0.1
PBz is not to be taken greater than 1.
.8 For the purpose of maintenance and inspection, any oil fuel tanks that do not border the outer shell plating shall be located no closer to the bottom shell plating than the minimum value of h in paragraph 6 and no closer to the side shell plating than the applicable minimum value of w in paragraph 7 or 8.
12 In approving the design and construction of ships to be built in accordance with this regulation, Administrations shall have due regard to the general safety aspects, including the need for maintenance and inspection of wing and double bottom tanks or spaces.
Regulation 13
Standard discharge connection
To enable pipes of reception facilities to be connected with the ship’s discharge pipeline for residues from machinery bilges and from sludge tanks, both lines shall be fitted with a standard discharge connection in accordance with the following table:
Standard dimensions of flanges for discharge connections
| Description | Dimension |
| Outside diameter | 215 mm |
| Inner diameter | According to pipe outside diameter |
| Bolt circle diameter | 183 mm |
| Slots in flange | 6 holes 22 mm in diameter equidistantly placed on a bolt circle of the above diameter, slotted to the flange periphery. The slot width to be 22 mm |
| Flange thickness | 20 mm |
| Bolts and nuts:quantity, diameter | 6, each of 20 mm in diameter and of suitable length |
| The flange is designed to accept pipes up to a maximum internal diameter of 125 mm and shall be of steel or other equivalent material having a flat face. This flange, together with a gasket of oil-proof material, shall be suitable for a service pressure of 600 kPa. | |
PART B EQUIPMENT
Regulation 14
Oil filtering equipment
1 Except as specified in paragraph 3 of this regulation any ship of 400 gross tonnage and above but less than 10,000 gross tonnage shall be fitted with oil filtering equipment complying with paragraph 6 of this regulation. Any such ship which may discharge into the sea ballast water retained in fuel oil tanks in accordance with regulation 16.2 shall comply with paragraph 2 of this regulation.
2 Except as specified in paragraph 3 of this regulation any ship of 10,000 gross tonnage and above shall be fitted with oil filtering equipment complying with paragraph 7 of this regulation.
3 Ships, such as hotel ships, storage vessels, etc., which are stationary except for non-cargo-carrying relocation voyages need not be provided with oil filtering equipment. Such ships shall be provided with a holding tank having a volume adequate, to the satisfaction of the Administration, for the total retention on board of the oily bilge water. All oily bilge water shall be retained on board for subsequent discharge to reception facilities.
4 The Administration shall ensure that ships of less than 400 gross tonnage are equipped, as far as practicable, to retain on board oil or oily mixtures or discharge them in accordance with the requirements of regulation 15.6 of this Annex.
5 The Administration may waive the requirements of paragraphs 1 and 2 of this regulation for:
.1 any ship engaged exclusively on voyages within special areas, or
.2 any ship certified under the International Code of Safety for High-Speed Craft (or otherwise within the scope of this Code with regard to size and design) engaged on a scheduled service with a turn-around time not exceeding 24 hours and covering also non-passenger/cargo-carrying relocation voyages for these ships,
.3 with regard to the provision of subparagraphs .1 and .2 above, the following conditions shall be complied with:
.3.1 the ship is fitted with a holding tank having a volume adequate, to the satisfaction of the Administration, for the total retention on board of the oily bilge water;
.3.2 all oily bilge water is retained on board for subsequent discharge to reception facilities;
.3.3 the Administration has determined that adequate reception facilities are available to receive such oily bilge water in a sufficient number of ports or terminals the ship calls at;
.3.4 the International Oil Pollution Prevention Certificate, when required, is endorsed to the effect that the ship is exclusively engaged on the voyages within special areas or has been accepted as a high-speed craft for the purpose of this regulation and the service is identified; and
.3.5 the quantity, time, and port of the discharge are recorded in the Oil Record Book Part I.
6 Oil filtering equipment referred to in paragraph 1 of this regulation shall be of a design approved by the Administration and shall be such as will ensure that any oily mixture discharged into the sea after passing through the system has an oil content not exceeding 15 parts per million. In considering the design of such equipment, the Administration shall have regard to the specification recommended by the Organization.*
7 Oil filtering equipment referred to in paragraph 2 of this regulation shall comply with paragraph 6 of this regulation. In addition, it shall be provided with alarm arrangement to indicate when this level cannot be maintained. The system shall also be provided with arrangements to ensure that any discharge of oily mixtures is automatically stopped when the oil content of the effluent exceeds 15 parts per million. In considering the design of such equipment and approvals, the Administration shall have regard to the specification recommended by the Organization.*
* Refer to the Recommendation on International Performance and Test Specification for Oily-Water Separating Equipment and Oil Content Meters, adopted by the Organization by Assembly resolution A.393(X), or the Guidelines and specifications for Pollution Prevention equipment for Machinery space Bilges of Ships, adopted by the Marine Environment Protection Committee by resolution MEPC.60(33), or the revised guidelines and specification for pollution prevention equipment for machinery space bilges of ships, adopted by the Marine Environment Protection Committee by resolution MEPC.107(49).
PART C CONTROL OF OPERATIONAL DISCHARGE OF OIL
Regulation 15
Control of discharge of oil
1 Subject to the provisions of regulation 4 of this annex and paragraphs 2, 3, and 6 of this regulation, any discharge into the sea of oil or oily mixtures from ships shall be prohibited.
A. Discharges outside special areas
2 Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnage and above shall be prohibited except when all the following conditions are satisfied:
.1 the ship is proceeding en route;
.2 the oily mixture is processed through an oil filtering equipment meeting the requirements of regulation 14 of this Annex;
.3 the oil content of the effluent without dilution does not exceed 15 parts per million;
.4 the oily mixture does not originate from cargo pump room bilges on oil tankers; and
.5 the oily mixture, in case of oil tankers, is not mixed with oil cargo residues.
B. Discharges in special areas
3 Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnage and above shall be prohibited except when all of the followin
g conditions are satisfied:
.1 the ship is proceeding en route;
.2 the oily mixture is processed through an oil filtering equipment meeting the requirements of regulation 14.7 of this Annex;
.3 the oil content of the effluent without dilution does not exceed 15 parts per million;
.4 the oily mixture does not originate from cargo pump room bilges on oil tankers; and
.5 the oily mixture, in case of oil tankers, is not mixed with oil cargo residues.
4 In respect of the Antarctic area, any discharge into the sea of oil or oily mixtures from any ship shall be prohibited.
5 Nothing in this regulation shall prohibit a ship on a voyage only part of which is in a special area from discharging outside a special area in accordance with paragraphs 2 of this regulation.
C. Requirements for ships of less than 400 gross tonnage in all areas except the Antarctic area
6 In the case of a ship of less than 400 gross tonnage, oil and all oily mixtures shall either be retained on board for subsequent discharge to reception facilities or discharged into the sea in accordance with the following provisions:
.1 the ship is proceeding en route;
.2 the ship has in operation equipment of a design approved by the Administration that ensures that the oil content of the effluent without dilution does not exceed 15 parts per million;
.3 the oily mixture does not originate from cargo pump room bilges on oil tankers; and
.4 the oily mixture, in case of oil tankers, is not mixed with oil cargo residues.
D. General requirements
7 Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of a ship or its wake, Governments of Parties to the present Convention should, to the extent they are reasonably able to do so, promptly investigate the facts bearing on the issue of whether there has been a violation of the provisions of this regulation. The investigation should include, in particular, the wind and sea conditions, the track and speed of the ship, other possible sources of the visible traces in the vicinity, and any relevant oil discharge records.
8 No discharge into the sea shall contain chemicals or other substances in quantities or concentrations which are hazardous to the marine environment or chemicals or other substances introduced for the purpose of circumventing the conditions of discharge specified in this regulation.
9 The oil residues which cannot be discharged into the sea in compliance with this regulation shall be retained on board for subsequent discharge to reception facilities.
Regulation 16
Segregation of oil and water ballast and carriage of oil in forepeak tanks
1 Except as provided in paragraph 2 of this regulation, in ships delivered after 31 December 1979, as defined in regulation 1.28.2, of 4,000 gross tonnage and above other than oil tankers, and in oil tankers delivered after 31 December 1979, as defined in regulation 1.28.2, of 150 gross tonnage and above, no ballast water shall be carried in any oil fuel tank.
2 Where the need to carry large quantities of oil fuel render it necessary to carry ballast water which is not a clean ballast in any oil fuel tank, such ballast water shall be discharged to reception facilities or into the sea in compliance with regulation 15 of this Annex using the equipment specified in regulation 14.2 of this Annex, and an entry shall be made in the Oil Record Book to this effect.
3 In a ship of 400 gross tonnage and above, for which the building contract is placed after 1 January 1982 or, in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction after 1 July 1982, oil shall not be carried in a forepeak tank or a tank forward of the collision bulkhead.
4 All ships other than those subject to paragraphs 1 and 3 of this regulation shall comply with the provisions of those paragraphs as far as is reasonable and practicable.
Regulation 17
Oil Record Book, Part I – Machinery space operations
1 Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I (Machinery Space Operations). The Oil Record Book, whether as a part of the ship’s official log-book or otherwise, shall be in the Form specified in appendix III to this Annex.
2 The Oil Record Book Part I shall be completed on each occasion, on a tank-to-tank basis if appropriate, whenever any of the following machinery space operations takes place in the ship:
.1 ballasting or cleaning of oil fuel tanks;
.2 discharge of dirty ballast or cleaning water from oil fuel tanks;
.3 collection and disposal of oil residues (sludge and other oil residues);
.4 discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces; and
.5 bunkering of fuel or bulk lubricating oil.
3 In the event of such discharge of oil or oily mixture as is referred to in regulation 4 of this Annex or in the event of accidental or other exceptional discharge of oil not excepted by that regulation, a statement shall be made in the Oil Record Book Part I of the circumstances of, and the reasons for, the discharge.
4 Each operation described in paragraph 2 of this regulation shall be fully recorded without delay in the Oil Record Book Part I, so that all entries in the book appropriate to that operation are completed. Each completed operation shall be signed by the officer or officers in charge of the operations concerned and each completed page shall be signed by the master of ship. The entries in the Oil Record Book Part I, for ships holding an International Oil Pollution Prevention Certificate, shall be at least in English, French or Spanish. Where entries in an official national language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a dispute or discrepancy.
5 Any failure of the oil filtering equipment shall be recorded in the Oil Record Book Part I.
6 The Oil Record Book Part I, shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board the ship. It shall be preserved for a period of three years after the last entry has been made.
7 The competent authority of the Government of a Party to the present Convention may inspect the Oil Record Book Part I on board any ship to which this Annex applies while the ship is in its port or offshore terminals and may make a copy of any entry in that book and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so
made which has been certified by the master of the ship as a true copy of an entry in the ship’s Oil Record Book Part I shall be made admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book Part I and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
CHAPTER 4 – REQUIREMENTS FOR THE CARGO AREA OF OIL TANKERS
PART A CONSTRUCTION
Regulation 18
Segregated Ballast Tanks
Oil tankers of 20,000 tonnes deadweight and above delivered after 1 June 1982
1 Every crude oil tanker of 20,000 tonnes deadweight and above and every product carrier of 30,000 tonnes deadweight and above delivered after 1 June 1982, as defined in regulation 1.28.4, shall be provided with segregated ballast tanks and shall comply with paragraphs 2, 3 and 4, or 5 as appropriate, of this regulation.
2 The capacity of the segregated ballast tanks shall be so determined that the ship may operate safely on ballast voyages without recourse to the use of cargo tanks for water ballast except as provided for in paragraph 3 or 4 of this regulation. In all cases, however, the capacity of segregated ballast tanks shall be at least such that, in any ballast condition at any part of the voyage, including the conditions consisting of lightweight plus segregated ballast only, the ship’s draughts and trim can meet the following requirements:
.1 the moulded draught amidships (dm) in metres (without taking into account any ship’s deformation) shall not be less than:
dm = 2.0 + 0.02L
.2 the draughts at the forward and after perpendiculars shall correspond to those determined by the draught amidships (dm) as specified in paragraph 2.1 of this regulation, in association with the trim by the stern of not greater than 0.015L; and
.3 in any case the draught at the after perpendicular shall not be less than that which is necessary to obtain full immersion of the propeller(s).
3 In no case shall ballast water be carried in cargo tanks, except:
.1 on those rare voyages when weather conditions are so severe that, in the opinion of the master, it is necessary to carry additional ballast water in cargo tanks for the safety of the ship; and
.2 in exceptional cases where the particular character of the operation of an oil tanker renders it necessary to carry ballast water in excess of the quantity required under paragraph 2 of this regulation, provided that such operation of the oil tanker falls under the category of exceptional cases as established by the Organization.
Such additional ballast water shall be processed and discharged in compliance with regulation 34 of this Annex and an entry shall be made in the Oil Record Book Part II referred to in regulation 36 of this Annex.
4 In the case of crude oil tankers, the additional ballast permitted in paragraph 3 of this regulation shall be carried in cargo tanks only if such tanks have been crude oil washed in accordance with regulation 35 of this Annex before departure from an oil unloading port or terminal.
5 Notwithstanding the provisions of paragraph 2 of this regulation the segregated ballast conditions for oil tankers less than 150 metres in length shall be to the satisfaction of the Administration.
Crude oil tankers of 40,000 tonnes deadweight and above delivered on or before 1 June 1982
6 Subject to the provisions of paragraph 7 of this regulation every crude oil tanker of 40,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, shall be provided with segregated ballast tanks and shall comply with the requirements of paragraphs 2 and 3 of this regulation.
7 Crude oil tankers referred to in paragraph 6 of this regulation may, in lieu of being provided with segregated tanks operate with a cargo tank cleaning procedure using crude oil washing in accordance with regulation 33 and 35 of this Annex unless the crude oil tanker is intended to carry crude oil which is not suitable for crude oil washing.
Product carriers of 40,000 tonnes deadweight and above delivered on or before 1 June 1982
8 Every product carrier of 40,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, shall be provided with segregated ballast tanks and shall comply with the requirements of paragraphs 2 and 3 of this regulation, or alternatively operate with dedicated clean ballast tanks in accordance with the following provisions:
.1 The product carrier shall have adequate tank capacity, dedicated solely to the carriage of clean ballast as defined in regulation 1.17 of this Annex, to meet the requirements of paragraphs 2 and 3 of this regulation.
.2 The arrangements and operational procedures for dedicated clean ballast tanks shall comply with the requirements established by the Administration. Such requirements shall contain at least all the provisions of the revised Specifications for Oil Tankers with Dedicated Clean Ballast Tanks adopted by the Organization by resolution A.495(XII).
.3 The product carrier shall be equipped with an oil content meter, approved by the Administration on the basis of specifications recommended by the Organization, to enable supervision of the oil content in ballast water being discharged.*
.4 Every product carrier operating with dedicated clean ballast tanks shall be provided with a Dedicated Clean Ballast Tank Operation Manual** detailing the system and specifying operational procedures. Such a Manual shall be to the satisfaction of the Administration and shall contain all the information set out in the Specifications referred to in subparagraph 8.2 of this regulation. If an alteration affecting the dedicated clean ballast tank system is made, the Operation Manual shall be revised accordingly.
An oil tanker qualified as a segregated ballast oil tanker
9 Any oil tanker which is not required to be provided with segregated ballast tanks in accordance with paragraphs 1, 6 or 8 of this regulation may, however be qualified as a segregated ballast tanker, provided that it complies with the requirements of paragraphs 2 and 3 or 5 as appropriate, of this regulation.
Oil tankers delivered on or before 1 June 1982 having special ballast arrangements
10 Oil tankers delivered on or before 1 June 1982, as defined in regulation 1.28.3, having special ballast arrangements:
.1 Where an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, is so constructed or operates in such a manner that it complies at all times with the draught and trim requirements set out in paragraph 2 of this regulation without recourse to the use of ballast water, it shall be deemed to comply with the segregated ballast tank requirements referred to in paragraph 6 of this regulation,
provided that all of the following conditions are complied with:
.1.1 operational procedures and ballast arrangements are approved by the Administration;
.1.2 agreement is reached between the Administration and the Governments of the port States Parties to the present convention concerned when the draught and trim requirements are achieved through an operational procedure; and
.1.3 the International Oil Pollution Prevention Certificate is endorsed to the effect that the oil tanker is operating with special ballast arrangements.
.2 In no case shall ballast water be carried in oil tanks except on those rare voyages when weather conditions are so severe that, in the opinion of the master, it is necessary to carry additional ballast water in cargo tanks for the safety of the ship. Such additional ballast water shall be processed and discharged in compliance with regulation 34 of this Annex and in accordance with the requirements of regulations 29, 31 and 32 of this Annex, and entry shall be made in the Oil Record Book referred to in regulation 36 of this Annex.
.3 An Administration which has endorsed a Certificate in accordance with subparagraph 10.1.3 of this regulation shall communicate to the Organization the particulars thereof for circulation to the Parties to the present Convention.
Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979
11 Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979, as defined in regulation 1.28.2, shall be provided with segregated ballast tanks and shall comply with paragraphs 2, 3 and 4 or paragraph 5 as appropriate of this regulation.
Protective location of segregated ballast
12 Protective location of segregated ballast spaces.
In every crude oil tanker of 20,000 tonnes deadweight and above and every product carrier of 30,000 tonnes deadweight and above delivered after 1 June 1982, as defined in regulation 1.28.4, except those tankers that meet regulation 19, the segregated ballast tanks required to provide the capacity to comply with the requirements of paragraph 2 of this regulation, which are located within the cargo tank length, shall be arranged in accordance with the requirements of paragraphs 13, 14 and 15 of this regulation to provide a measure of protection against oil outflow in the event of grounding or collision.
13 Segregated ballast tanks and spaces other than oil tanks within the cargo tanks length (Lt) shall be so arranged as to comply with the following requirement:
ΣPAc + ΣPAs ≥ J[Lt(B + 2D)]
where: PAc = the side shell area in square metres for each segregated ballast tank or space other than an oil tank based on projected moulded dimensions,
PAs = the bottom shell area in square metres for each such tank or space based on projected moulded dimensions,
Lt = length in metres between the forward and after extremities of the cargo tanks,
B = maximum breadth of the ship in metres as defined in regulation 1.22 of this Annex,
D = moulded depth in metres measured vertically from the top of the keel to the top of the freeboard deck beam at side amidships. In ships having rounded gunwales, the moulded depth shall be measured to the point of intersection of the moulded lines of the deck and side shell plating, the lines extending as though the gunwale were of angular design
J = 0.45 for oil tankers of 20,000 tonnes deadweight, 0.30 for oil tankers of 200,000 tonnes deadweight and above, subject to the provisions of paragraph 14 of this regulation.
For intermediate values of deadweight the value of J shall be determined by linear interpolation.
Whenever symbols given in this paragraph appear in this regulation, they have the meaning as defined in this paragraph.
14 For tankers of 200,000 tonnes deadweight and above the value of J may be reduced as follows:
……………………………………….Oc + OsJreduced = [J – (a – ——–)]……………………………………..4OA
or 0.2 whichever is greater
where: a = 0.25 for oil tankers of 200,000 tonnes deadweight,
a = 0.40 for oil tankers of 300,000 tonnes deadweight,
a = 0.50 for oil tankers of 420,000 tonnes deadweight and above.
For intermediate values of deadweight the value of a shall be determined by linear interpolation.
Oc = as defined in regulation 25.1.1 of this Annex,
Os = as defined in regulation 25.1.2 of this Annex,
OA = the allowable oil outflow as required by regulation 26.2 of this Annex.
15 In the determination of PAc and PAs for segregated ballast tanks and spaces other than oil tanks the following shall apply:
.1 the minimum width of each wing tank or space either of which extends for the full depth of the ship’s side or from the deck to the top of the double bottom shall be not less than 2 metres. The width shall be measured inboard from the ship’s side at right angles to the centreline. Where a lesser width is provided the wing tank or space shall not be taken into account when calculating the protecting area PAc; and
.2 the minimum vertical depth of each double bottom tank or space shall be B/15 or 2 metres, whichever is the lesser. Where a lesser depth is provided the bottom tank or space shall not be taken into account when calculating the protecting area PAs.
The minimum width and depth of wing tanks and double bottom tanks shall be measured clear of the bilge area and, in the case of minimum width, shall be measured clear of any rounded gunwale area.
* For oil content meters installed on oil tankers built prior to 2 October 1986, refer to the Recommendation on international performance and test specifications for oily-water separating equipment and oil content meters adopted by the Organization by resolution A.393(X). For oil content meters as part of discharge monitoring and control systems installed on oil tankers built on or after 2 October 1986, refer to the Guidelines and specifications for oil discharge monitoring and control systems for oil tankers adopted by the Organization by resolution A.586(14). For oil content meters installed on oil tankers the keels of which are laid, or which are at a similar stage of construction, on or after 1 January 2005, refer to the Revised Guidelines and specifications adopted by the Organization by resolution MEPC.108(49).
** See resolution A.495(XII) for the standard format of the Manual.
Regulation 19
Double hull and double bottom requirements for oil tankers
delivered on or after 6 July 1996
1 This regulation shall apply to oil tankers of 600 tonnes deadweight and above delivered on or after 6 July 1996, as defined in regulation 1.28.6, as follows:
2 Every oil tanker of 5,000 tonnes deadweight and above shall:
.1 in lieu of paragraphs 12 to 15 of regulation 18, as applicable, comply with the requirements of paragraph 3 of this regulation unless it is subject to the provisions of paragraphs 4 and 5 of this regulation; and
.2 comply, if applicable, with the requirements of regulation 28.6.
3 The entire cargo tank length shall be protected by ballast tanks or spaces other than tanks that carry oil as follows:
.1 Wing tanks or spaces
Wing tanks or spaces shall extend either for the full depth of the ship’s side or from the top of the double bottom to the uppermost deck, disregarding a rounded gunwale where fitted. They shall be arranged such that the cargo tanks are located inboard of the moulded line of the side shell plating nowhere less than the distance w which, as shown in figure 1 is measured at any cross-section at right angles to the side shell, as specified below:
…………………..DWw = 0.5 + —— (m), or……………….20,000
w = 2.0 m, whichever is the lesser.
The minimum value of w = 1.0 m.
.2 Double bottom tanks or spaces
At any cross-section the depth of each double bottom tank or space shall be such that the distance h between the bottom of the cargo tanks and the moulded line of the bottom shell plating measured at right angles to the bottom shell plating as shown in figure 1 is not less than specified below:
h = B/15 (m) or
h = 2.0 m, whichever is the lesser.
The minimum value of h = 1.0 m.
.3 Turn of the bilge area or at locations without a clearly defined turn of the bilge
When the distances h and w are different, the distance w shall have preference at levels exceeding 1.5h above the baseline as shown in figure 1.
.4 The aggregate capacity of ballast tanks
On crude oil tankers of 20,000 tonnes deadweight and above and product carriers of 30,000 tonnes deadweight and above, the aggregate capacity of wing tanks, double bottom tanks, forepeak tanks and after peak tanks shall not be less than the capacity of segregated ballast tanks necessary to meet the requirements of regulation 18 of this Annex. Wing tanks or spaces and double bottom tanks used to meet the requirements of regulation 18 shall be located as uniformly as practicable along the cargo tank length. Additional segregated ballast capacity provided for reducing longitudinal hull girder bending stress, trim, etc., may be located anywhere within the ship.
.5 Suction wells in cargo tanks
Suction wells in cargo tanks may protrude into the double bottom below the boundary line defined by the distance h provided that such wells are as small as practicable and the distance between the well bottom and bottom shell plating is not less than 0.5h.
.6 Ballast and cargo piping
Ballast piping and other piping such as sounding and vent piping to ballast tanks shall not pass through cargo tanks. Cargo piping and similar piping to cargo tanks shall not pass through ballast tanks. Exemptions to this requirement may be granted for short lengths of piping, provided that they are completely welded or equivalent.
4 The following applies for double bottom tanks or spaces:
.1 Double bottom tanks or spaces as required by paragraph 3.2 of this regulation may be dispensed with, provided that the design of the tanker is such that the cargo and vapour pressure exerted on the bottom shell plating forming a single boundary between the cargo and the sea does not exceed the external hydrostatic water pressure, as expressed by the following formula:
f x hc x ρc x g + p ≤ dn x ρs x g
where:
hc = height of cargo in contract with the bottom shell plating in metres
ρc= maximum cargo density in kg/m3
dn = minimum operating draught under any expected loading condition in metres
ρs= density of seawater in kg/m3
p = maximum set pressure above atmospheric pressure (gauge pressure) of pressure/vacuum valve provided for the cargo tank in Pa
f = safety factor = 1.1
g = standard acceleration of gravity (9.81 m/s2)
.2 Any horizontal partition necessary to fulfil the above requirements shall be located at a height not less than B/6 or 6 m, whichever is the lesser, but not more than 0.6D, above the baseline where D is the moulded depth amidships.
.3 The location of wing tanks or spaces shall be as defined in paragraph 3.1 of this regulation except that, below a level 1.5 h above the baseline where h is as defined in paragraph 3.2 of this regulation, the cargo tank boundary line may be vertical down to the bottom plating, as shown in figure 2.
5 Other methods of design and construction of oil tankers may also be accepted as alternatives to the requirements prescribed in paragraph 3 of this regulation, provided that such methods ensure at least the same level of protection against oil pollution in the event of collision or stranding and are approved in principle by the Marine Environment Protection Committee based on guidelines developed by the Organization*.
6 Every oil tanker of less than 5,000 tonnes deadweight shall comply with paragraphs 3 and 4 of this regulation, or shall:
.1 at least be fitted with double bottom tanks or spaces having such a depth that the distance h specified in paragraph 3.2 of this regulation, complies with the following:
h = B/15 (m)
with a minimum value of h = 0.76 m;
in the turn of the bilge area and at locations without a clearly defined turn of the bilge, the cargo tank boundary line shall run parallel to the line of the midship flat bottom as shown in figure 3; and
.2 be provided with cargo tanks so arranged that the capacity of each cargo tank does not exceed 700 m3 unless wing tanks or spaces are arranged in accordance with paragraph 3.1 of this regulation, complying with the following:
………………..2.4DWw = 0.4 + ——-(m)……………….20000
with a minimum value of w = 0.76 m.
7 Oil shall not be carried in any space extending forward of a collisi
on bulkhead located in accordance with regulation II-1/11 of the International Convention for the Safety of Life at Sea, 1974, as amended. An oil tanker that is not required to have a collision bulkhead in accordance with that regulation shall not carry oil in any space extending forward of the transverse plane perpendicular to the centreline that is located as if it were a collision bulkhead located in accordance with that regulation.
8 In approving the design and construction of oil tankers to be built in accordance with the provisions of this regulation, Administrations shall have due regard to the general safety aspects including the need for the maintenance and inspections of wing and double bottom tanks or spaces.
* Refer to the Revised Interim Guidelines for the approval of alternative methods of design and construction of oil tankers adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.110(49).
Regulation 20
Double hull and double bottom requirements for oil tankers delivered before 6 July 1996
1 Unless expressly provided otherwise this regulation shall:
.1 apply to oil tankers of 5,000 tonnes deadweight and above, which are delivered before 6 July 1996, as defined in regulation 1.28.5 of this Annex; and
.2 not apply to oil tankers complying with regulation 19 and regulation 28 in respect of paragraph 28.6, which are delivered before 6 July 1996, as defined in regulation 1.28.5 of this Annex; and
.3 not apply to oil tankers covered by subparagraph 1 above which comply with regulation 19.3.1 and 19.3.2 or 19.4 or 19.5 of this Annex, except that the requirement for minimum distances between the cargo tank boundaries and the ship side and bottom plating need not be met in all respects. In that event, the side protection distances shall not be less than those specified in the International Bulk Chemical Code for type 2 cargo tank location and the bottom protection distances at centreline shall comply with regulation 18.15.2 of this Annex.
2 For the purpose of this regulation:
.1 “Heavy diesel oil” means diesel oil other than those distillates of which more than 50 per cent by volume distils at a temperature not exceeding 340ºC when tested by the method acceptable to the Organization1.
.2 “Fuel oil” means heavy distillates or residues from crude oil or blends of such materials intended for use as a fuel for the production of heat or power of a quality equivalent to the specification acceptable to the Organization2.
3 For the purpose of this regulation, oil tankers are divided into the following categories:
.1 “Category 1 oil tanker” means an oil tanker of 20,000 tonnes deadweight and above carrying crude oil, fuel oil, heavy diesel oil or lubricating oil as cargo, and of 30,000 tonnes deadweight and above carrying oil other than the above, which does not comply with the requirements for oil tankers delivered after 1 June 1982, as defined in regulation 1.28.4 of this Annex;
.2 “Category 2 oil tanker” means an oil tanker of 20,000 tonnes deadweight and above carrying crude oil, fuel oil, heavy diesel oil or lubricating oil as cargo, and of 30,000 tonnes deadweight and above carrying oil other than the above, which complies with the requirements for oil tankers delivered after 1 June 1982, as defined in regulation 1.28.4 of this Annex; and
.3 “Category 3 oil tanker” means an oil tanker of 5,000 tonnes deadweight and above but less than that specified in subparagraph 1 or 2 of this paragraph.
4 An oil tanker to which this regulation applies shall comply with the requirements of paragraphs 2 to 5, 7 and 8 of regulation 19 and regulation 28 in respect of paragraph 28.6 of this Annex not later than 5 April 2005 or the anniversary of the date of delivery of the ship on the date or in the year specified in the following table:
| Category of oil tanker | Date or year |
| Category 1 | 5 April 2005 for ships delivered on 5 April 1982 or earlier2005 for ships delivered after 5 April 1982 |
| Category 2 andCategory 3 | 5 April 2005 for ships delivered on 5 April 1977 or earlier2005 for ships delivered after 5 April 1977 but before 1 January 19782006 for ships delivered in 1978 and 19792007 for ships delivered in 1980 and 19812008 for ships delivered in 19822009 for ships delivered in 19832010 for ships delivered in 1984 or later |
5 Notwithstanding the provisions of paragraph 4 of this regulation, in the case of a Category 2 or 3 oil tanker fitted with only double bottoms or double sides not used for the carriage of oil and extending to the entire cargo tank length or double hull spaces which are not used for the carriage of oil and extend to the entire cargo tank length, but which does not fulfil conditions for being exempted from the provisions of paragraph 1.3 of this regulation, the Administration may allow continued operation of such a ship beyond the date specified in paragraph 4 of this regulation, provided that:
.1 the ship was in service on 1 July 2001;
.2 the Administration is satisfied by verification of the official records that the ship complied with the conditions specified above;
.3 the conditions of the ship specified above remain unchanged; and
.4 such continued operation does not go beyond the date on which the ship reaches 25 years after the date of its delivery.
6 A Category 2 or 3 oil tanker of 15 years and over after the date of its delivery shall comply with the Condition Assessment Scheme adopted by the Marine Environment Protection Committee by resolution MEPC.94(46), as amended, provided that such amendments shall be adopted, brought into force and take effect in accordance with the provisions of article 16 of the present Convention relating to amendment procedures applicable to an appendix to an Annex.
7 The Administration may allow continued operation of a Category 2 or 3 oil tanker beyond the date specified in paragraph 4 of this regulation, if satisfactory results of the Condition Assessment Scheme warrant that, in the opinion of the Administration, the ship is fit to continue such operation, provided that the operation shall not go beyond the anniversary of the date of delivery of the ship in 2015 or the date on which the ship reaches 25 years after the date of its delivery, whichever is the earlier date.
8 .1 The Administration of a Party to the present Convention which allows the appl
ication of paragraph 5 of this regulation, or allows, suspends, withdraws or declines the application of paragraph 7 of this regulation, to a ship entitled to fly its flag shall forthwith communicate to the Organization for circulation to the Parties to the present Convention particulars thereof, for their information and appropriate action, if any.
.2 A Party to the present Convention shall be entitled to deny entry into the ports or offshore terminals under its jurisdiction of oil tankers operating in accordance with the provisions of:
.1 paragraph 5 of this regulation beyond the anniversary of the date of delivery of the ship in 2015; or
.2 paragraph 7 of this regulation.
In such cases, that Party shall communicate to the Organization for circulation to the Parties to the present Convention particulars thereof for their information.
1 Refer to the American Society for Testing and Material’s Standard Test Method (Designation D86).
2 Refer to the American Society for Testing and Material’s Specification for Number Four Fuel Oil (Designation D396) or heavier.
Regulation 21
Prevention of oil pollution from oil tankers carrying heavy grade oil as cargo
1 This regulation shall:
.1 apply to oil tankers of 600 tonnes deadweight and above carrying heavy grade oil as cargo regardless of the date of delivery; and
.2 not apply to oil tankers covered by subparagraph 1 above which comply with regulations 19.3.1 and 19.3.2 or 19.4 or 19.5 of this Annex, except that the requirement for minimum distances between the cargo tank boundaries and the ship side and bottom plating need not be met in all respects. In that event, the side protection distances shall not be less than those specified in the International Bulk Chemical Code for type 2 cargo tank location and the bottom protection distances at centreline shall comply with regulation 18.15.2 of this Annex.
2 For the purpose of this regulation “heavy grade oil” means any of the following:
.1 crude oils having a density at 15ºC higher than 900 kg/m3;
.2 oils, other than crude oils, having either a density at 15ºC higher than 900 kg/m3 or a kinematic viscosity at 50ºC higher than 180 mm2/s; or
.3 bitumen, tar and their emulsions.
3 An oil tanker to which this regulation applies shall comply with the provisions of paragraphs 4 to 8 of this regulation in addition to complying with the applicable provisions of regulation 20.
4 Subject to the provisions of paragraphs 5, 6 and 7 of this regulation, an oil tanker to which this regulation applies shall:
.1 if 5,000 tonnes deadweight and above, comply with the requirements of regulation 19 of this Annex not later than 5 April 2005; or
.2 if 600 tonnes deadweight and above but less than 5,000 tonnes deadweight, be fitted with both double bottom tanks or spaces complying with the provisions of regulation 19.6.1 of this Annex, and wing tanks or spaces arranged in accordance with regulation 19.3.1 and complying with the requirement for distance w as referred to in regulation 19.6.2, not later than the anniversary of the date of delivery of the ship in the year 2008.
5 In the case of an oil tanker of 5,000 tonnes deadweight and above, carrying heavy grade oil as cargo fitted with only double bottoms or double sides not used for the carriage of oil and extending to the entire cargo tank length or double hull spaces which are not used for the carriage of oil and extend to the entire cargo tank length, but which does not fulfil conditions for being exempted from the provisions of paragraph 1.2 of this regulation, the Administration may allow continued operation of such a ship beyond the date specified in paragraph 4 of this regulation, provided that:
.1 the ship was in service on 4 December 2003;
.2 the Administration is satisfied by verification of the official records that the ship complied with the conditions specified above;
.3 the conditions of the ship specified above remain unchanged; and
.4 such continued operation does not go beyond the date on which the ship reaches 25 years after the date of its delivery.
6 .1 The Administration may allow continued operation of an oil tanker of 5,000 tonnes deadweight and above, carrying crude oil having a density at 15ºC higher than 900 kg/m3 but lower than 945 kg/m3, beyond the date specified in paragraph 4.1 of this regulation, if satisfactory results of the Condition Assessment Scheme referred to in regulation 20.6 warrant that, in the opinion of the Administration, the ship is fit to continue such operation, having regard to the size, age, operational area and structural conditions of the ship and provided that the operation shall not go beyond the date on which the ship reaches 25 years after the date of its delivery.
.2 The Administration may allow continued operation of an oil tanker of 600 tonnes deadweight and above but less than 5,000 tonnes deadweight, carrying heavy grade oil as cargo, beyond the date specified in paragraph 4.2 of this regulation, if, in the opinion of the Administration, the ship is fit to continue such operation, having regard to the size, age, operational area and structural conditions of the ship, provided that the operation shall not go beyond the date on which the ship reaches 25 years after the date of its delivery.
7 The Administration of a Party to the present Convention may exempt an oil tanker of 600 tonnes deadweight and above carrying heavy grade oil as cargo from the provisions of this regulation if the oil tanker:
.1 either is engaged in voyages exclusively within an area under its jurisdiction, or operates as a floating storage unit of heavy grade oil located within an area under its jurisdiction; or
.2 either is engaged in voyages exclusively within an area under the jurisdiction of another Party, or operates as a floating storage unit of heavy grade oil located within an area under the jurisdiction of another Party, provided that the Party within whose jurisdiction the oil tanker will be operating agrees to the operation of the oil tanker within an area under its jurisdiction.
8 .1 The Administration of a Party to the present Convention which allows, suspends, withdraws or declines the application of paragraph 5, 6 or 7 of this regulation to a ship entitled to fly its flag shall forthwith communicate to the Organization for circulation to the Parties to the present Convention particulars thereof, for their information and appropriate action, if any.
.2 Subject to the provisions of international law, a Party to the present Convention shall be entitled to deny entry of oil tankers operating in accordance with the provisions of paragraph 5 or 6 of this regulation into the ports or offshore terminals under its jurisdiction, or deny ship-to-ship transfer of heavy grade oil in areas under its jurisdiction except when this is necessa
ry for the purpose of securing the safety of a ship or saving life at sea. In such cases, that Party shall communicate to the Organization for circulation to the Parties to the present Convention particulars thereof for their information.
Regulation 22
Pump-room bottom protection
1 This regulation applies to oil tankers of 5,000 tonnes deadweight and above constructed on or after 1 January 2007.
2 The pump-room shall be provided with a double bottom such that at any cross-section the depth of each double bottom tank or space shall be such that the distance h between the bottom of the pump-room and the ship’s base line measured at right angles to the ship’s base line is not less than specified below:
h = B/15(m) or
h = 2 m, whichever is the lesser.
The minimum value of h = 1 m.
3 In case of pump rooms whose bottom plate is located above the base line by at least the minimum height required in paragraph 2 above (e.g. gondola stern designs), there will be no need for a double bottom construction in way of the pump-room.
4 Ballast pumps shall be provided with suitable arrangements to ensure efficient suction from double bottom tanks.
5 Notwithstanding the provisions of paragraphs 2 and 3 above, where the flooding of the pump-room would not render the ballast or cargo pumping system inoperative, a double bottom need not be fitted.
Regulation 23
Accidental oil outflow performance
1 This regulation shall apply to oil tankers delivered on or after 1 January 2010, as defined in regulation 1.28.8.
2 For the purpose of this regulation, the following definitions shall apply:
.1 “Load line draught (dS)” is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to the summer freeboard to be assigned to the ship. Calculations pertaining to this regulation should be based on draught dS, notwithstanding assigned draughts that may exceed dS, such as the tropical loadline.
.2 “Waterline (dB)” is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to 30% of the depth DS.
.3 “Breadth (BS)” is the greatest moulded breadth of the ship, in metres, at or below the deepest load line dS.
.4 “Breadth (BB)” is the greatest moulded breadth of the ship, in metres, at or below the waterline dB.
.5 “Depth (DS)” is the moulded depth, in metres, measured at mid-length to the upper deck at side.
.6 “Length (L)” and “deadweight (DW)” are as defined in regulations 1.19 and 1.23, respectively.
3 To provide adequate protection against oil pollution in the event of collision or stranding the following shall be complied with:
.1 for oil tankers of 5,000 tonnes deadweight (DWT) and above, the mean oil outflow parameter shall be as follows:
OM ≤ 0.015 for C ≤ 200,000 m3
OM ≤ 0.012 + (0.003/200,000) (400,000-C) for 200,000 m3 < C < 400,000 m3
OM ≤ 0.012 for C ≥ 400,000 m3
for combination carriers between 5,000 tonnes deadweight (DWT) and 200,000 m3 capacity, the mean oil outflow parameter may be applied, provided calculations are submitted to the satisfaction of the Administration, demonstrating that after accounting for its increased structural strength, the combination carrier has at least equivalent oil out flow performance to a standard double hull tanker of
the same size having a OM < = 0.015.
OM ≤ 0.021 for C ≤ 100,000 m3
OM ≤ 0.015 + (0.006/100,000) (200,000-C) for 100,000 m3 < C ≤ 200,000 m3
where:
OM = mean oil outflow parameter.
C = total volume of cargo oil, in m3, at 98% tank filling
.2 for oil tankers of less than 5,000 tonnes deadweight (DWT) :
The length of each cargo tank shall not exceed 10 m or one of the following values, whichever is the greater:
.2.1 where no longitudinal bulkhead is provided inside the cargo tanks:
………bi(0.5 — + 0.1)L but not to exceed 0.2L………B
.2.2 where a centreline longitudinal bulkhead is provided inside the cargo tanks:
………bi(0.25 — + 0.15)L………B
.2.3 where two or more longitudinal bulkheads are provided inside the cargo tanks:
.2.3.1 for wing cargo tanks: 0.2L
.2.3.2 for centre cargo tanks:
………………bi.2.3.2.1 if — ≥ 0.2L : 0.2L………………B
bi
.2.3.2.2 if — < 0.2L:
B
.2.3.2.2.1 – where no centreline longitudinal bulkhead is provided:
………bi(0.5 — + 0.1)L………B
.2.3.2.2.2- where a centreline longitudinal bulkhead is provided:
………bi(0.25 — + 0.15)L………B
bi is the minimum distance from the ship’s side to the outer longitudinal bulkhead of the tank in question measured inboard at right angles to the centreline at the level corresponding to the assigned summer freeboard.
4 The following general assumptions shall apply when calculating the mean oil outflow parameter:
.1 The cargo block length extends between the forward and aft extremities of all tanks arranged for the carriage of cargo oil, including slop tanks.
.2 Where this regulation refers to cargo tanks, it shall be understood to include all cargo tanks, slop tanks and fuel tanks located within the cargo block length.
.3 The ship shall be assumed loaded to the load line draught dS without trim or heel.
.4 All cargo oil tanks shall be assumed loaded to 98% of their volumetric capacity. The nominal density of the cargo oil ( ρ n) shall be calculated as follows:
ρ n = 1000 (DWT)/C (kg/m3)
.5 For the purposes of these outflow calculations, the permeability of each space within the cargo block, including cargo tanks, ballast tanks an
d other non-oil spaces shall be taken as 0.99, unless proven otherwise.
.6 Suction wells may be neglected in the determination of tank location provided that such wells are as small as practicable and the distance between the well bottom and bottom shell plating is not less than 0.5h, where h is the height as defined in regulation 19.3.2.
5 The following assumptions shall be used when combining the oil outflow parameters:
.1 The mean oil outflow shall be calculated independently for side damage and for bottom damage and then combined into the non-dimensional oil outflow parameter OM, as follows:
OM = (0.4 OMS + 0.6 OMB ) / C
where:
OMS = mean outflow for side damage, in m3; and
OMB = mean outflow for bottom damage, in m3.
.2 For bottom damage, independent calculations for mean outflow shall be done for 0 m and minus 2.5 m tide conditions, and then combined as follows:
OMB = 0.7 OMB(0) + 0.3 OMB(2.5)
where:
OMB(0) = mean outflow for 0 m tide condition; and
OMB(2.5) = mean outflow for minus 2.5 m tide condition, in m3.
6 The mean outflow for side damage OMS shall be calculated as follows:
………………nOMS = C3 ∑ PS(i)OS(i) (m3)………………i
where:
i = represents each cargo tank under consideration;
n = total number of cargo tanks;
PS(i) = the probability of penetrating cargo tank i from side damage, calculated in accordance with paragraph 8.1 of this regulation;
OS(i) = the outflow, in m3, from side damage to cargo tank i, which is assumed equal to the total volume in cargo tank i at 98% filling, unless it is proven through the application of the Guidelines referred to in regulation 19.5 that any significant cargo volume will be retained; and
C3 = 0.77 for ships having two longitudinal bulkheads inside the cargo tanks, provided these bulkheads are continuous over the cargo block and Ps(i) is developed in accordance with this regulation. C3 equals 1.0 for all other ships or when Ps(i) is developed in accordance with paragraph 10 of this regulation.
7 The mean outflow for bottom damage shall be calculated for each tidal condition as follows:
………………….n.1 OMB(0) = ∑ PB(i)OB(i)CDB(i) (m3)………………….i
where:
i = represents each cargo tank under consideration;
n = the total number of cargo tanks;
PB(i) = the probability of penetrating cargo tank i from bottom damage, calculated in accordance with, paragraph 9.1 of this regulation;
OB(i) = the outflow from cargo tank i, in m3, calculated in accordance with paragraph 7.3 of this regulation; and
CDB(i) = factor to account for oil capture as defined in paragraph 7.4 of this regulation
…………………….n.2 OMB(2.5) = ∑ PB(i)OB(i)CDB(i) (m3)……………………i
where:
i,n, PB(i) and CDB(i) = as defined in subparagraph .1 above;
OB(i) = the outflow from cargo tank i, in m³, after tidal change
.3 The oil outflow OB(i) for each cargo oil tank shall be calculated based on pressure balance principles, in accordance with the following assumptions:
.3.1 The ship shall be assumed stranded with zero trim and heel, with the stranded draught prior to tidal change equal to the load line draught ds.
.3.2 The cargo level after damage shall be calculated as follows:
hc = {(ds + tc – Zl) ( ρs) – (1000 p) / g }/ ρn
where:
hc = the height of the cargo oil above Zl, in metres;
tc = the tidal change, in m. Reductions in tide shall be expressed as negative values;
Zl = the height of the lowest point in the cargo tank above baseline, in m;
ρs = density of seawater, to be taken as 1,025 kg/m3;
p = if an inert gas system is fitted, the normal overpressure, in kPa, to be taken as not less than 5 kPa; if an inert gas system is not fitted, the overpressure may be taken as 0;
g = the acceleration of gravity, to be taken as 9.81 m/s2; and
ρn = nominal density of cargo oil, calculated in accordance with paragraph 4.4 of this regulation.
.3.3 For cargo tanks bounded by the bottom shell, unless proven otherwise, oil outflow OB(i) shall be taken not less than 1% of the total volume of cargo oil loaded in cargo tank i, to account for initial exchange losses and dynamic effects due to current and waves.
.4 In the case of bottom damage, a portion from the outflow from a cargo tank may be captured by non-oil compartments. This effect is approximated by application of the factor CDB(i) for each tank, which shall be taken as follows:
CDB(i) = 0.6 for cargo tanks bounded from below by non-oil compartments;
CDB(i) = 1.0 for cargo tanks bounded by the bottom shell.
8 The probability PS of breaching a compartment from side damage shall be calculated as follows:
.1 PS = PSL PSV PST
where:
PSL =1 – PSf – PSa = probability the damage will extend into the longitudinal zone bounded by Xa and Xf;
PSV = 1 – PSu – PS1 = probability the damage will extend into the vertical zone bounded by Zl and Zu; and
PST = 1 – PSy = probability the damage will extend transversely beyond the boundary defined by y.
.2 PSa, PSf, PSl, PSu and PSy shall be determined by linear interpolation from the table of probabilities for side damage provided in pa
ragraph 8.3 of this regulation,
where:
PSa = the probability the damage will lie entirely aft of location Xa/L;
PSf = the probability the damage will lie entirely forward of location Xf/L;
PSl = the probability the damage will lie entirely below the tank;
PSu = the probability the damage will lie entirely above the tank; and
PSy = the probability the damage will lie entirely outboard of the tank.
Compartment boundaries Xa, Xf, Zl, Zu and y shall be developed as follows:
Xa = the longitudinal distance from the aft terminal of L to the aftmost point on the compartment being considered, in metres;
Xf = the longitudinal distance from the aft terminal of L to the foremost point on the compartment being considered, in metres;
Zl = the vertical distance from the moulded baseline to the lowest point on the compartment being considered, in metres;
Zu = the vertical distance from the moulded baseline to the highest point on the compartment being considered, in metres. Zu is not to be taken greater than Ds; and
y = the minimum horizontal distance measured at right angles to the centreline between the compartment under consideration and the side shell in metres;*
*For symmetrical tank arrangements, damages are considered for one side of the ship only, in which case all “y” dimensions are to be measured from that same side. For asymmetrical arrangements refer to the Explanatory Notes on matters related to the accidental oil outflow performance, adopted by the Organization by resolution MEPC.122(52).
.3 Table of probabilities for side damage
| Xa/L | PSa | Xf/L | PSf | Zl/DS | Psl | Zu/Ds | PSu | |||
| 0.00 | 0.000 | 0.00 | 0.967 | 0.00 | 0.000 | 0.00 | 0.968 | |||
| 0.05 | 0.023 | 0.05 | 0.917 | 0.05 | 0.000 | 0.05 | 0.952 | |||
| 0.10 | 0.068 | 0.10 | 0.867 | 0.10 | 0.001 | 0.10 | 0.931 | |||
| 0.15 | 0.117 | 0.15 | 0.817 | 0.15 | 0.003 | 0.15 | 0.905 | |||
| 0.20 | 0.167 | 0.20 | 0.767 | 0.20 | 0.007 | 0.20 | 0.873 | |||
| 0.25 | 0.217 | 0.25 | 0.717 | 0.25 | 0.013 | 0.25 | 0.836 | |||
| 0.30 | 0.267 | 0.30 | 0.667 | 0.30 | 0.021 | 0.30 | 0.789 | |||
| 0.35 | 0.317 | 0.35 | 0.617 | 0.35 | 0.034 | 0.35 | 0.733 | |||
| 0.40 | 0.367 | 0.40 | 0.567 | 0.40 | 0.055 | 0.40 | 0.670 | |||
| 0.45 | 0.417 | 0.45 | 0.517 | 0.45 | 0.085 | 0.45 | 0.599 | |||
| 0.50 | 0.467 | 0.50 | 0.467 | 0.50 | 0.123 | 0.50 | 0.525 | |||
| 0.55 | 0.517 | 0.55 | 0.417 | 0.55 | 0.172 | 0.55 | 0.452 | |||
| 0.60 | 0.567 | 0.60 | 0.367 | 0.60 | 0.226 | 0.60 | 0.383 | |||
| 0.65 | 0.617 | 0.65 | 0.317 | 0.65 | 0.285 | 0.65 | 0.317 | |||
| 0.70 | 0.667 | 0.70 | 0.267 | 0.70 | 0.347 | 0.70 | 0.255 | |||
| 0.75 | 0.717 | 0.75 | 0.217 | 0.75 | 0.413 | 0.75 | 0.197 | |||
| 0.80 | 0.767 | 0.80 | 0.167 | 0.80 | 0.482 | 0.80 | 0.143 | |||
| 0.85 | 0.817 | 0.85 | 0.117 | 0.85 | 0.553 | 0.85 | 0.092 | |||
| 0.90 | 0.867 | 0.90 | 0.068 | 0.90 | 0.626 | 0.90 | 0.046 | |||
| 0.95 | 0.917 | 0.95 | 0.023 | 0.95 | 0.700 | 0.95 | 0.013 | |||
| 1.00 | 0.967 | 1.00 | 0.000 | 1.00 | 0.775 | 1.00 | 0.000 |
PSy shall be calculated as follows:
PSy = (24.96 -199.6 y/BS) (y/BS) for y/BS ≤ 0.05
PSy = 0.749 + {5 -44.4 (y/BS – 0.05)} (y/BS – 0.05) for 0.05 < y/BS < 0.1
PSy = 0.888 + 0.56 (y/BS – 0.1) for y/BS ≥ 0.1
PSy shall not be taken greater than 1.
9 The probability PB of breaching a compartment from bottom damage shall be calculated as follows:
.1 PB = PBL PBT PBV
where:
PBL = 1 – PBf – PBa = probability the damage will extend into the longitudinal zone bounded by Xa and Xf;
PBT = 1 – PBp – PBs = probability the damage will extend into the transverse zone bounded by Yp and Ys; and
PBV = 1 – PBz = probability the damage will extend vertically above the boundary defined by z.
.2 PBa, PBf, PBp, PBs, and PBz shall be determined by linear interpolation from the table of probabilities for bottom damage provided in paragraph 9.3 of this regulation, where:
PBa = the probability the damage will lie entirely aft of location Xa/L;
PBf = the probability the damage will lie entirely forward of location Xf/L;
PBp = the probability the damage will lie entirely to port of the tank;
PBs = the probability the damage will lie entirely t
o starboard of the tank; and
PBz = the probability the damage will lie entirely below the tank.
Compartment boundaries Xa, Xf, Yp, Ys, and z shall be developed as follows:
Xa and Xf are as defined in paragraph 8.2 of this regulation;
Yp = the transverse distance from the port-most point on the compartment located at or below the waterline dB, to a vertical plane located BB /2 to starboard of the ship’s centreline, in metres;
Ys = the transverse distance from the starboard-most point on the compartment located at or below the waterline dB, to a vertical plane located BB /2 to starboard of the ship’s centreline, in metres; and
z = the minimum value of z over the length of the compartment, where, at any given longitudinal location, z is the vertical distance from the lower point of the bottom shell at that longitudinal location to
the lower point of the compartment at that longitudinal location, in metres.
.3 Table of probabilities for bottom damage
| Xa /L | PBa | Xf/L | PBf | Yp /BB | PBp | Ys /BB | PBs | |||
| 0.00 | 0.000 | 0.00 | 0.969 | 0.00 | 0.844 | 0.00 | 0.000 | |||
| 0.05 | 0.002 | 0.05 | 0.953 | 0.05 | 0.794 | 0.05 | 0.009 | |||
| 0.10 | 0.008 | 0.10 | 0.936 | 0.10 | 0.744 | 0.10 | 0.032 | |||
| 0.15 | 0.017 | 0.15 | 0.916 | 0.15 | 0.694 | 0.15 | 0.063 | |||
| 0.20 | 0.029 | 0.20 | 0.894 | 0.20 | 0.644 | 0.20 | 0.097 | |||
| 0.25 | 0.042 | 0.25 | 0.870 | 0.25 | 0.594 | 0.25 | 0.133 | |||
| 0.30 | 0.058 | 0.30 | 0.842 | 0.30 | 0.544 | 0.30 | 0.171 | |||
| 0.35 | 0.076 | 0.35 | 0.810 | 0.35 | 0.494 | 0.35 | 0.211 | |||
| 0.40 | 0.096 | 0.40 | 0.775 | 0.40 | 0.444 | 0.40 | 0.253 | |||
| 0.45 | 0.119 | 0.45 | 0.734 | 0.45 | 0.394 | 0.45 | 0.297 | |||
| 0.50 | 0.143 | 0.50 | 0.687 | 0.50 | 0.344 | 0.50 | 0.344 | |||
| 0.55 | 0.171 | 0.55 | 0.630 | 0.55 | 0.297 | 0.55 | 0.394 | |||
| 0.60 | 0.203 | 0.60 | 0.563 | 0.60 | 0.253 | 0.60 | 0.444 | |||
| 0.65 | 0.242 | 0.65 | 0.489 | 0.65 | 0.211 | 0.65 | 0.494 | |||
| 0.70 | 0.289 | 0.70 | 0.413 | 0.70 | 0.171 | 0.70 | 0.544 | |||
| 0.75 | 0.344 | 0.75 | 0.333 | 0.75 | 0.133 | 0.75 | 0.594 | |||
| 0.80 | 0.409 | 0.80 | 0.252 | 0.80 | 0.097 | 0.80 | 0.644 | |||
| 0.85 | 0.482 | 0.85 | 0.170 | 0.85 | 0.063 | 0.85 | 0.694 | |||
| 0.90 | 0.565 | 0.90 | 0.089 | 0.90 | 0.032 | 0.90 | 0.744 | |||
| 0.95 | 0.658 | 0.95 | 0.026 | 0.95 | 0.009 | 0.95 | 0.794 | |||
| 1.00 | 0.761 | 1.00 | 0.000 | 1.00 | 0.000 | 1.00 | 0.844 |
PBz shall be calculated as follows:
PBz = (14.5 – 67 z/DS) (z/DS ) for z/DS ≤ 0.1,
PBz = 0.78 + 1.1 (z/DS – 0.1) for z/DS > 0.1.
PBz shall not be taken greater than 1.
10 This regulation uses a simplified probabilistic approach where a summation is carried out over the contributions to the mean outflow from each cargo tank. For certain designs such as those characterized by the occurrence of steps/recesses in bulkheads/decks and for sloping bulkheads and/or a pronounced hull curvature, more rigorous calculations may be appropriate. In such cases one of the following calculation procedures may be applied:
.1 The probabilities referred to in 8 and 9 above may be calculated with more precision through application of hypothetical sub-compartments.*
.2 The probabilities referred to in 8 and 9 above may be calculated through direct application of the probability density functions contained in the Guidelines referred to in regulation 19.5.
.3 The oil outflow performance may be evaluated in accordance with the method described in the Guidelines referred to in regulation 19.5.
11 The following provisions regarding piping arrangements shall apply:
.1 Lines of piping that run through cargo tanks in a position less than 0.30Bs from the ship’s side or less than 0.30Ds from the ship’s bottom shall be fitted with valves or similar closing devices at the point at which they open into any cargo tank. These valves shall be kept closed at sea at any time when the tanks contain cargo oil, except that they may be opened only for cargo transfer needed for essential cargo operations.
.2 Credit for reducing oil outflow through the use of an emergency rapid cargo transfer system or other system arranged to mitigate oil outflow in the event of an accident may be taken into account only after the effectiveness and safety aspects of the system are approved by the Organization. Submittal for approval shall be made in accordance with the provisions of the Guidelines referred to in regulation 19.5.
* Refer to the Explanatory Notes on matters related to the accidental oil outflow performance, adopted by the Organization by resolution MEPC.122(52).
Regulation 24
Damage assumptions
1 For the purpose of calculating
hypothetical oil outflow from oil tankers in accordance with regulations 25 and 26, three dimensions of the extent of damage of a parallelepiped on the side and bottom of the ship are assumed as follows. In the case of bottom damages two conditions are set forth to be applied individually to the stated portions of the oil tanker.
.1 Side damage:
| 1 Longitudinal extent(lc): | 1/3 L2/3 or 14.5 metres,whichever is less. | |
| 2 Transverse extent (tc) (inboard from the ship’s side at right angles to the centreline at the level corresponding to the assigned summer freeboard): | B/5 or 11.5 metres,whichever is less | |
| 3 Vertical extent (vc): | From the base lineupwards without limit | |
.2 Bottom damage:
| For 0.3L from the forward perpendicular of the ship | Any other part of theship | |
| 1 Longitudinal extent (ls): | L/10 | L/10 or 5 metres,whichever is less |
| 2 Transverse extent (ts): | B/6 or 10 metres,whichever is less but not less than 5 metres | 5 metres |
| 3 Vertical extent from thebase line (vs): | B/15 or 6 metres,whichever is less |
2 Wherever the symbols given in this regulation appear in this chapter, they have the meaning as defined in this regulation.
Regulation 25
Hypothetical outflow of oil
1 The hypothetical outflow of oil in the case of side damage (Oc) and bottom damage (Os) shall be calculated by the following formulae with respect to compartments breached by damage to all conceivable locations along the length of the ship to the extent as defined in regulation 24 of this Annex.
.1 For side damages:
Oc = ΣWi + Σ KiCi (I)
.2 For bottom damages:
Os = 1/3 (ΣZiWi + ΣZiCi ) (II)
where: Wi = volume of a wing tank in cubic metres assumed to be breached by the damage as specified in regulation 24 of this Annex; Wi for a segregated ballast tank may be taken equal to zero.
Ci = volume of a centre tank in cubic metres assumed to be breached by the damage as specified in regulation 24 of this Annex; Ci for a segregated ballast tank may be taken equal to zero.
Ki = 1- bi/tc when bi is equal to or greater than tc, Ki shall be taken equal to zero.
Zi = 1- hi/vs, when hi is equal to or greater than vs, Zi shall be taken equal to zero.
bi = width of wing tank in metres under consideration measured inboard from the ship’s side at right angles to the centreline at the level corresponding to the assigned summer freeboard.
hi = minimum depth of the double bottom in metres under consideration; where no double bottom is fitted hi shall be taken equal to zero.
Whenever symbols given in this paragraph appear in this chapter, they have the meaning as defined in this regulation.
2 If a void space or segregated ballast tank of a length less than lc as defined in regulation 24 of this Annex is located between wing oil tanks, Oc in formula (I) may be calculated on the basis of volume Wi being the actual volume of one such tank (where they are of equal capacity) or the smaller of the two tanks (if they differ in capacity) adjacent to such space, multiplied by Si as defined below and taking for all other wing tanks involved in such collision the value of the actual full volume.
Si = 1 – li/lc
where li = length in metres of void space or segregated ballast tank under consideration.
3.1 Credit shall only be given in respect of double bottom tanks which are either empty or carrying clean water when cargo is carried in the tanks above.
3.2 Where the double bottom does not extend for the full length and width of the tank involved, the double bottom is considered non-existent and the volume of the tanks above the area of the bottom damage shall be included in formula (II) even if the tank is not considered breached because of the installation of such a partial double bottom.
3.3 Suction wells may be neglected in the determination of the value hi provided such wells are not excessive in area and extend below the tank for a minimum distance and in no case more than half the height of the double bottom. If the depth of such a well exceeds half the height of the double bottom, hi shall be taken equal to the double bottom height minus the well height.
Piping serving such wells if installed within the double bottom shall be fitted with valves or other closing arrangements located at the point of connection to the tank served to prevent oil outflow in the event of damage to the piping. Such piping shall be installed as high from the bottom shell as possible. These valves shall be kept closed at sea at any time when the tank contains oil cargo, except that they may be opened only for cargo transfer needed for the purpose of trimming of the ship.
4 In these case where bottom damage simultaneously involves four centre tanks, the value of Os may be calculated according to the formula:
Os = 1/4 (ΣZiWi + ΣZiCi) (III)
5 An Administration may credit as reducing oil outflow in case of bottom damage, an installed cargo transfer system having an emergency high suction in each cargo oil tank, capable of transferring from a breached tank or tanks to segregated ballast tanks or to available cargo tankage if it can be assured that such tanks will have sufficient ullage. Credit for such a system would be governed by ability to transfer in two hours of operation oil equal to one half of the largest of the breached tanks
involved and by availability of equivalent receiving capacity in ballast or cargo tanks. The credit shall be confined to permitting calculation of Os according to formula (III). The pipes for such suctions shall be installed at least at a height not less than the vertical extent of the bottom damage vs. The Administration shall supply the Organization with the information concerning the arrangements accepted by it, for circulation to other Parties to the Convention.
6 This regulation does not apply to oil tankers delivered on or after 1 January 2010, as defined in regulation 1.28.8.
Regulation 26
Limitations of size and arrangement of cargo tanks
1 Except as provided in paragraph 7 below:
1. every oil tanker of 150 gross tonnage and above delivered after 31 December 1979, as defined in regulation 1.28.2, and
2. every oil tanker of 150 gross tonnage and above delivered on or before 31 December 1979, as defined in regulation 1.28.1, which falls into either of the following categories :
.2.1 a tanker, the delivery of which is after 1 January 1977, or
.2.2 a tanker to which both the following conditions apply:
.2.2.1 delivery is not later than 1 January 1977; and
.2.2.2 the building contract is placed after 1 January 1974, or in cases where no building contract has previously been placed, the keel is laid or the tanker is at a similar stage of construction after 30 June 1974.
shall comply with the provisions of this regulation.
2 Cargo tanks of oil tankers shall be of such size and arrangements that the hypothetical outflow Oc or Os calculated in accordance with the provisions of regulation 25 of this Annex anywhere in the length of the ship does not exceed 30,000 cubic metres or 400 3√DW, whichever is the greater, but subject to a maximum of 40,000 cubic metres.
3 The volume of any one wing cargo oil tank of an oil tanker shall not exceed 75 per cent of the limits of the hypothetical oil outflow referred to in paragraph 2 of this regulation. The volume of any one centre cargo oil tank shall not exceed 50,000 cubic metres. However, in segregated ballast oil tankers as defined in regulation 18 of this Annex, the permitted volume of a wing cargo oil tank situated between two segregated ballast tanks, each exceeding lc in length, may be increased to the maximum limit of hypothetical oil outflow provided that the width of the wing tanks exceeds tc.
4 The length of each cargo tank shall not exceed 10 m or one of the following values, whichever is the greater:
.1 where no longitudinal bulkhead is provided inside the cargo tanks:
………bi(0.5 — +0.1)L but not to exceed 0.2L………B
.2 where a centreline longitudinal bulkhead is provided inside the cargo tanks:
………bi(0.25 — +0.15)L………B
.3 where two or more longitudinal bulkheads are provided inside the cargo tanks:
.3.1 for wing cargo tanks: 0.2L
.3.2 for centre cargo tanks:
………………bi.3.2.1 if .. — is equal to or greater than one fifth: 0.2L……………… B
………………bi.3.2.2 if — is less than one fifth:…………….B
.3.2.2.1 – where no centreline longitudinal bulkhead is provided:
………bi(0.5 — +0.1)L………B
.3.2.2.2 – where a centreline longitudinal bulkhead is provided:
………bi(0.25 — +0.15)L………B
bi is the minimum distance from the ship’s side to the outer longitudinal bulkhead of the tank in question measured inboard at right angles to the centreline at the level corresponding to the assigned summer freeboard.
5 In order not to exceed the volume limits established by paragraphs 2, 3 and 4 of this regulation and irrespective of the accepted type of cargo transfer system installed, when such system interconnects two or more cargo tanks, valves or other similar closing devices shall be provided for separating the tanks from each other. These valves or devices shall be closed when the tanker is at sea.
6 Lines of piping which run through cargo tanks in a position less than tc from the ship’s side or less than vc from the ship’s bottom shall be fitted with valves or similar closing devices at the point at which they open into any cargo tank. These valves shall be kept closed at sea at any time when the tanks contain cargo oil, except that they may be opened only for cargo transfer needed for the purpose of trimming of the ship.
7 This regulation does not apply to oil tankers delivered on or after 1 January 2010, as defined in regulation 1.28.8.
Regulation 27
Intact stability
1 Every oil tanker of 5,000 tonnes deadweight and above delivered on or after 1 February 2002, as defined in regulation 1.28.7, shall comply with the intact stability criteria specified in paragraphs 1.1 and 1.2 of this regulation, as appropriate, for any operating draught under the worst possible conditions of cargo and ballast loading, consistent with good operational practice, including intermediate stages of liquid transfer operations. Under all conditions the ballast tanks shall be assumed slack.
.1 In port, the initial metacentric height GMo, corrected for the free surface measured at 0° heel, shall be not less than 0.15 m;
.2 At sea, the following criteria shall be applicable:
.2.1 the area under the righting lever curve (GZ curve) shall be not less than 0.055 m.rad up to θ = 30º angle of heel and not less than 0.09 m.rad up to θ = 40º or other angle of flooding θf* if this angle is less than 40º Additionally, the area under the righting lever curve (GZ curve) between the angles of heel of 30º and 40º or between 30º and θf, if this angle is less than 40º, shall be not less than 0.03 m.rad;
.2.2 the righting lever GZ shall be at least 0.20 m at an angle of heel equal to or greater than 30º;
.2.3 the maximum righting arm shall occur at an angle of heel preferably exceeding 30º but not less than 25º; and
.2.4 the initial metacentric height GMo, corrected for free surface measured at 0º heel, shall be not less than 0.15 m.
2 The requirements of paragraph 1 of this regulation shall be met through design measures. For combination carriers simple supplementary operational procedures may be allowed.
3 Simple supplementary operational procedures for liquid transfer operations referred to in paragraph 2 of this regulation shall mean written pr
ocedures made available to the master which:
.1 are approved by the Administration;
.2 indicate those cargo and ballast tanks which may, under any specific condition of liquid transfer and possible range of cargo densities, be slack and still allow the stability criteria to be met. The slack tanks may vary during the liquid transfer operations and be of any combination provided they satisfy the criteria;
.3 will be readily understandable to the officer-in-charge of liquid transfer operations;
.4 provide for planned sequences of cargo/ballast transfer operations;
.5 allow comparisons of attained and required stability using stability performance criteria in graphical or tabular form;
.6 require no extensive mathematical calculations by the officer-in-charge;
.7 provide for corrective actions to be taken by the officer-in-charge in case of departure from recommended values and in case of emergency situations; and
.8 are prominently displayed in the approved trim and stability booklet and at the cargo/ballast transfer control station and in any computer software by which stability calculations are performed.
* θ f is the angle of heel at which openings in the hull superstructures or deckhouses which cannot be closed weather tight, immerse. In applying this criterion, small openings through which progressive flooding cannot take place need not be considered as open.
Regulation 28
Subdivision and damage stability
1 Every oil tanker delivered after 31 December 1979, as defined in regulation 1.28.2, of 150 gross tonnage and above, shall comply with the subdivision and damage stability criteria as specified in paragraph 3 of this regulation, after the assumed side or bottom damage as specified in paragraph 2 of this regulation, for any operating draught reflecting actual partial or full load conditions consistent with trim and strength of the ship as well as relative densities of the cargo. Such damage shall be applied to all conceivable locations along the length of the ship as follows:
.1 in tankers of more than 225 metres in length, anywhere in the ship’s length;
.2 in tankers of more than 150 metres, but not exceeding 225 metres in length, anywhere in the ship’s length except involving either after or forward bulkhead bounding the machinery space located aft. The machinery space shall be treated as a single floodable compartment; and
.3 in tankers not exceeding 150 metres in length, anywhere in the ship’s length between adjacent transverse bulkheads with the exception of the machinery space. For tankers of 100 metres or less in length where all requirements of paragraph 3 of this regulation cannot be fulfilled without materially impairing the operational qualities of the ship, Administrations may allow relaxations from these requirements.
Ballast conditions where the tanker is not carrying oil in cargo tanks, excluding any oil residues, shall not be considered.
2 The following provisions regarding the extent and the character of the assumed damage shall apply:
.1 Side damage:
| 1 Longitudinal extent: | 1/3 L 2/3 or 14.5 metres,whichever is less. | |
| 2 Transverse extent (inboard from the ship’s side at right angles to the centreline at the level summer load line): | B/5 or 11.5 metres,whichever is less | |
| 3 Vertical extent : | From the moulded line of the bottom shell plating at centerline,upwards without limit | |
.2 Bottom damage:
| For 0.3L from the forward perpendicular of the ship | Any other part of theship | |
| 1 Longitudinal extent : | 1/3 L 2/3 or 14.5 metres whichever is less | 1/3 L 2/3 or 5 metres whichever is less |
| 2 Transverse extent (ts): | B/6 or 10 metres,whichever is less | B/6 or 5 metres,whichever is less |
| 3 Vertical extent from the base line (vs): | B/15 or 6 metres,whichever is less, measured from the moulded line of thebottom shell plating at centreline | B/15 or 6 metres, whichever is less, measured from the bottom shell plating at centreline |
.3 If any damage of a lesser extent than the maximum extent of damage specified in subparagraphs 2.1 and 2.2 of this paragraph would result in a more severe condition, such damage shall be considered.
.4 Where the damage involving transverse bulkheads is envisaged as specified in subparagraphs 1.1 and 1.2 of this regulation, transverse watertight bulkheads shall be spaced at least at a distance equal to the longitudinal extent of assumed damage specified in subparagraph 2.1 of this paragraph in order to be considered effective. Where transverse bulkhead are spaced at a lesser distance, one or more of these bulkheads within such extent of damage shall be assumed as non-existent for the purpose of determining flooded compartments.
.5 Where the damage between adjacent transverse watertight bulkheads is envisaged as specified in subparagraph 1.3 of this regulation, no main transverse bulkhead or a transverse bulkhead bounding side tanks or double bottom tanks shall be assumed damaged, unless:
.5.1 the spacing of the adjacent bulkheads is less than the longitudinal extent of assumed damage specified in subparagraph 2.1 of this paragraph; or
.5.2 there is a step or recess in a transverse bulkhead of more than 3.05 metres in length, located within the extent of penetration of assumed damage. The step formed by the after peak bulkhead and after peak top shall not be regarded as a step for the purpose of this regulation.
.6 If pipes, ducts or tunnels are situated within the assumed extent of damage, arrangements shall be made so that progressive flooding cannot thereby extend to compartments other than those assumed to be floodable for each case of damage.
3 Oil tankers shall be regarded as complying with the damage stability criteria if the following requirements are met:
.1 The final waterline, taking into account sinkage, heel and trim, shall be below
the lower edge of any opening through which progressive flooding may take place. Such openings shall include air-pipes and those which are closed by means of weathertight doors or hatch covers and may exclude those openings closed by means of watertight manhole covers and flush scuttles, small watertight cargo tank hatch covers which maintain the high integrity of the deck, remotely operated watertight sliding doors, and sidescuttles of the non-opening type.
.2 In the final stage of flooding, the angle of heel due to unsymmetrical flooding shall not exceed 25°, provided that this angle may be increased up to 30º if no deck edge immersion occurs.
.3 The stability in the final stage of flooding shall be investigated and may be regarded as sufficient if the righting lever curve has at least a range of 20º beyond the position of equilibrium in association with a maximum residual righting lever of at least 0.1 metre within the 20º range; the area under the curve within this range shall not be less than 0.0175 metre radians. Unprotected openings shall not be immersed within this range unless the space concerned is assumed to be flooded. Within this range, the immersion of any of the openings listed in subparagraph 3.1 of this paragraph and other openings capable of being closed watertight may be permitted.
.4 The Administration shall be satisfied that the stability is sufficient during intermediate stages of flooding.
.5 Equalization arrangements requiring mechanical aids such as valves or cross-levelling pipes, if fitted, shall not be considered for the purpose of reducing an angle of heel or attaining the minimum range of residual stability to meet the requirements of subparagraphs 3.1, 3.2 and 3.3 of this paragraph and sufficient residual stability shall be maintained during all stages where equalization is used. Spaces which are linked by ducts of a large cross-sectional area may be considered to be common.
4 The requirements of paragraph 1 of this regulation shall be confirmed by calculations which take into consideration the design characteristics of the ship, the arrangements, configuration and contents of the damaged compartments; and the distribution, relative densities and the free surface effect of liquids. The calculations shall be based on the following:
.1 Account shall be taken of any empty or partially filled tank, the relative density ocargoes carried, as well as any outflow of liquids from damaged compartments.
.2 The permeabilities assumed for spaces flooded as a result of damage shall be as follows:
| Spaces | Permeabilities |
| Appropriated to stores | 0.60 |
| Occupied by accommodation | 0.95 |
| Occupied by machinery | 0.85 |
| Voids | 0.95 |
| Intended for consumable liquids | 0 to 0.95* |
| Intended for other liquids | 0 to 0.95* |
.3 The buoyancy of any superstructure directly above the side damage shall be disregarded. The unflooded parts of superstructures beyond the extent of damage, however, may be taken into consideration provided that they are separated from the damaged space by watertight bulkheads and the requirements of subparagraph .1 of this regulation in respect of these intact spaces are complied with. Hinged watertight doors may be acceptable in watertight bulkheads in the superstructure.
.4 The free surface effect shall be calculated at an angle of heel of 5º for each individual compartment. The Administration may require or allow the free surface corrections to be calculated at an angle of heel greater than 5º for partially filled tanks.
.5 In calculating the effect of free surfaces of consumable liquids it shall be assumed that, for each type of liquid at least one transverse pair or a single centreline tank has a free surface and the tank or combination of tanks to be taken into account shall be those where the effect of free surface is the greatest.
5 The master of every oil tanker to which this regulation applies and the person in charge of a non-self-propelled oil tanker, to which this regulation applies shall be supplied in a approved form with:
.1 information relative to loading and distribution of cargo necessary to ensure compliance with the provisions of this regulation; and
.2 data on the ability of the ship to comply with damage stability criteria as determined by this regulation, including the effect of relaxations that may have been allowed under subparagraph 1.3 of this regulation.
6 For oil tankers of 20,000 tonnes deadweight and above delivered on or after 6 July 1996, as defined in regulation 1.28.6, the damage assumptions prescribed in paragraph 2.2 of this regulation shall be supplemented by the following assumed bottom raking damage:
.1 longitudinal extent:
.1.1 ships of 75,000 tonnes deadweight and above:
0.6L measured from the forward perpendicular;
.1.2 ships of less than 75,000 tonnes deadweight:
0.4L measured from the forward perpendicular;
.2 transverse extent: B/3 anywhere in the bottom;
.3 vertical extent: breach of the outer hull.
* The permeability of partially filled compartments shall be consistent with the amount of liquid carried in the compartment. Whenever damage penetrates a tank containing liquids, it shall be assumed that the contents are completely lost from that compartment and replaced by salt water up to the level of the final plane of equilibrium.
Regulation 29
Slop tanks
1 Subject to the provisions of paragraph 4 of regulation 3 of this Annex, oil tankers of 150 gross tonnage and above shall be provided with slop tank arrangements in accordance with the requirements of paragraphs 2.1 to 2.3 of this regulation. In oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, any cargo tank may be designated as a slop tank.
2.1 Adequate means shall be provided for cleaning the cargo tanks and transferring the dirty ballast residue and tank washings from the cargo tanks into a slop tank approved by the Administration.
2.2 In this system arrangements shall be provided to transfer the oily waste into a slop tank or combination of slop tanks in such a way that any effluent discharged into the sea will be such as to comply with the provisions of regulation 34 of this Annex.
2.3 The arrangement
s of the slop tank or combination of slop tanks shall have a capacity necessary to retain the slop generated by tank washings, oil residues and dirty ballast residues. The total capacity of the slop tank or tanks shall not be less than 3 per cent of the oil carrying capacity of the ship, except that the Administration may accept:
.1 2 per cent for such oil tankers where the tank washing arrangement are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system;
.2 2 per cent where segregated ballast tanks or dedicated clean ballast tanks are provided in accordance with regulation 18 of this Annex, or where a cargo tank cleaning system using crude oil washing is fitted in accordance with regulation 3 of this Annex. This capacity may be further reduced to 1.5 per cent for such oil tankers where the tank washing arrangements are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system; and
.3 1 per cent for combination carriers where oil cargo is only carried in tanks with smooth walls. This capacity may be further reduced to 0.8 per cent where the tank washing arrangements are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system.
2.4 Slop tanks shall be so designed particularly in respect of the position of inlets, outlets, baffles or weirs where fitted, so as to avoid excessive turbulence and entrainment of oil or emulsion with the water.
3 Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979, as defined in regulation 1.28.2, shall be provided with at least two slop tanks.
Regulation 30
Pumping, piping and discharge arrangement
1 In every oil tanker, a discharge manifold for connection to reception facilities for the discharge of dirty ballast water or oil-contaminated water shall be located on the open deck on both sides of the ship.
2 In every oil tanker of 150 gross tonnage and above, pipelines for the discharge to the sea of ballast water or oil contaminated water from cargo tank areas which may be permitted under regulation 34 of this Annex shall be led to the open deck or to the ship’s side above the waterline in the deepest ballast condition. Different piping arrangements to permit operation in the manner permitted in subparagraphs 6.1 to 6.5 of this regulation may be accepted.
3 In oil tankers of 150 gross tonnage and above delivered after 31 December 1979, as defined in regulation 1.28.2, means shall be provided for stopping the discharge into the sea of ballast water or oil contaminated water from cargo tank areas, other than those discharges below the waterline permitted under paragraph 6 of this regulation, from a position on the upper deck or above located so that the manifold in use referred to in paragraph 1 of this regulation and the discharge to the sea from the pipelines referred to in paragraph 2 of this regulation may be visually observed. Means for stopping the discharge need not be provided at the observation position if a positive communication system such as a telephone or radio system is provided between the observation position and the discharge control position.
4 Every oil tanker delivered after 1 June 1982, as defined in regulation 1.28.4, required to be provided with segregated ballast tanks or fitted with a crude oil washing system, shall comply with the following requirements:
.1 it shall be equipped with oil piping so designed and installed that oil retention in the lines is minimized; and
.2 means shall be provided to drain all cargo pumps and all oil lines at the completion of cargo discharge, where necessary by connection to a stripping device. The line and pump draining shall be capable of being discharged both ashore and to a cargo tank or a slop tank. For discharge ashore a special small diameter line shall be provided and shall be connected outboard of the ship’smanifold valves.
5 Every crude oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, required to be provided with segregated ballast tanks, or to be fitted with a crude oil washing system, shall comply with the provisions of paragraph 4.2 of this regulation.
6 On every oil tanker the discharge of ballast water or oil contaminated water from cargo tank areas shall take place above the waterline, except as follows:
.1 Segregated ballast and clean ballast may be discharged below the waterline:
.1.1 in ports or at offshore terminals, or
.1.2 at sea by gravity, or
.1.3 at sea by pumps if the ballast water exchange is performed under the provisions of regulation D-1.1 of the International Convention for the Control and Management of Ships’ Ballast Water and Sediments.
provided that the surface of the ballast water has been examined either visually or by other means immediately before the discharge to ensure that no contamination with oil has taken place.
.2 Oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, which, without modification, are not capable of discharging segregated ballast above the waterline may discharge segregated ballast below the waterline at sea, provided that the surface of the ballast water has been examined immediately before the discharge to ensure that no contamination with oil has taken place.
.3 Oil tankers delivered on or before 1 June 1982, as defined in regulation 1.28.3 operating with dedicated clean ballast tanks, which without modification are not capable of discharging ballast water from dedicated clean ballast tanks above the waterline, may discharge this ballast below the waterline provided that the discharge of the ballast water is supervised in accordance with regulation 18.8.3 of this Annex.
.4 On every oil tanker at sea, dirty ballast water or oil contaminated water from tanks in the cargo area, other than slop tanks, may be discharged by gravity below the waterline, provided that sufficient time has elapsed in order to allow oil/water separation to have taken place and the ballast water has been examined immediately before the discharge with an oil/water interface detector referred to in regulation 32 of this Annex, in order to ensure that the height of the interface is such that the discharge does not involve any increased risk of harm to the marine environment.
.5 On oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, at sea dirty ballast water or oil contaminated water from cargo tank areas may be discharged below the waterline, subsequent to or in lieu of the discharge by the method referred to in subparagraph 6.4 of this paragraph, provided that:
.5.1 a part
of the flow of such water is led through permanent piping to a readily accessible location on the upper deck or above where it may be visually observed during the discharge operation; and
.5.2 such part flow arrangements comply with the requirements established by the Administration, which shall contain at least all the provisions of the Specifications for the Design, Installation and Operation of a Part Flow System for Control of Overboard Discharges adopted by the Organization*.
7 Every oil tanker of 150 gross tonnage and above delivered on or after 1 January 2010, as defined in regulation 1.28.8, which has installed a sea chest that is permanently connected to the cargo pipeline system, shall be equipped with both a sea chest valve and an inboard isolation valve. In addition to these valves, the sea chest shall be capable of isolation from the cargo piping system whilst the tanker is loading, transporting, or discharging cargo by use of a positive means that is to the satisfaction of the Administration. Such a positive means is a facility that is installed in the pipeline system in order to prevent, under all circumstances, the section of pipeline between the sea chest valve and the inboard valve being filled with cargo.
* See appendix 4 to Unified Interpretations.
PART B EQUIPMENT
Regulation 31
Oil discharge monitoring and control system
1 Subject to the provisions of paragraphs 4 and 5 of regulation 3 of this Annex, oil tankers of 150 gross tonnage and above shall be equipped with an oil discharge monitoring and control system approved by the Administration.
2 In considering the design of the oil content meter to be incorporated in the system, the Administration shall have regard to the specification recommended by the Organization.* The system shall be fitted with a recording device to provide a continuous record of the discharge in litres per nautical mile and total quantity discharged, or the oil content and rate of discharge.This record shall be identifiable as to time and date and shall be kept for at least three years. The oil discharge monitoring and control system shall come into operation when there is any discharge of effluent into the sea and shall be such as will ensure that any discharge of oily mixture is automatically stopped when the instantaneous rate of discharge of oil exceeds that permitted by regulation 34 of this Annex. Any failure of this monitoring and control system shall stop the discharge. In the event of failure of the oil discharge monitoring and control system a manually operated alternative method may be used, but the defective unit shall be made operable as soon as possible. Subject to allowance by the port State authority a tanker with a defective oil discharge monitoring and control system may undertake one ballast voyage before proceeding to a repair port.
3 The oil discharge monitoring and control system shall be designed and installed in compliance with the guidelines and specifications for oil discharge monitoring and control system for oil tankers developed by the Organization**. Administrations may accept such specific arrangements as detailed in the Guidelines and Specifications.
4 Instructions as to the operation of the system shall be in accordance with an operational manual approved by the Administration. They shall cover manual as well as automatic operations and shall be intended to ensure that at no time shall oil be discharged except in compliance with the conditions specified in regulation 34 of this Annex.
* For oil content meters installed on oil tankers built prior to 2 October 1986, refer to the Recommendation on international performance and test specifications for oily-water separating equipment and oil content meters adopted by the Organization by resolution A.393(X). For oil content meters as part of discharge monitoring and control systems installed on oil tankers built on or after 2 October 1986, refer to the Guidelines and specifications for oil discharge monitoring and control systems for oil tankers adopted by the Organization by resolution A.586(14). For oil content meters as part of discharge monitoring and control systems installed on oil tankers the keel of which are laid or which are in a similar stage of construction on or after 1 January 2005, refer to the revised Guidelines and specifications for oil discharge monitoring and control systems for oil tankers adopted by the Organization by resolution MEPC.108(49).
** Refer to the Guidelines and Specifications for Oil Discharge Monitoring and Control Systems for Oil Tankers adopted by the Organization by resolution A.496 (XII) or the Revised Guidelines and Specifications for Oil Discharge Monitoring and Control Systems for Oil Tankers adopted by the Organization by resolution A.586(14), or the Revised Guidelines and Specifications for Oil Discharge Monitoring and Control Systems for Oil Tankers adopted by the Organization by resolution MEPC.108(49) as applicable.
Regulation 32
Oil/water interface detector*
Subject to the provisions of paragraphs 4 and 5 of regulation 3 of this Annex, oil tankers of 150 gross tonnage and above shall be provided with effective oil/water interface detectors approved by the Administration for a rapid and accurate determination of the oil/water interface in slop tanks and shall be available for use in other tanks where the separation of oil and water is effected and from which it is intended to discharge effluent direct to the sea.
* Refer to the Specifications for Oil/Water Interface Detectors adopted by the Organization by resolution MEPC.5(XIII).
Regulation 33
Crude oil washing requirements
1 Every crude oil tanker of 20,000 tonnes deadweight and above delivered after 1 June 1982, as defined in regulation 1.28.4, shall be fitted with a cargo tank cleaning system using crude oil washing. The Administration shall ensure that the system fully complies with the requirements of this regulation within one year after the tanker was first engaged in the trade of carrying crude oil or by the end of the third voyage carrying crude oil suitable for crude oil washing, whichever occurs later.
2 Crude oil washing installation and associated equipment and arrangements shall comply with the requirements established by the Administration. Such requirements shall contain at least all the provisions of the Specifications for the Design, Operation and Control of Crude Oil Washing Systems adopted by the Organization*. When a ship is not required, in accordance with paragraph 1 of this regulation to be, but is equipped with crude oil washing equipment, it shall comply with the safety aspects of the above-mentioned Specifications.
3 Every crude oil washing system required to be provided in accordance with regulation 18.7 of this Annex shall comply with the requirements of this regulation.
*Refer to the revised Specifications for the design, operation and control of crude oil washing systems adopted by the Organization by resolution A.446(XI) and amended by the Organization by resolution A.497(XII) and as further amended by resolution A.897(21).
PART C CONTROL OF OPERATIONAL DISCHARGES OF OIL
Regulation 34
Control of discharge of oil
A. Discharges outside special areas
1 Subject to the provisions of regulation 4 of this Annex and paragraph 2 of this regulation, any discharge into the sea of oil or oily mixtures from the cargo area of an oil tanker, shall be prohibited except when all the following conditions are satisfied:
.1 the tanker is not within a special area;
.2 the tanker is more than 50 nautical miles from the nearest land;
.3 the tanker is proceeding en route;
.4 the instantaneous rate of discharge of oil content does not exceed 30 litres per nautical mile;
.5 the total quantity of oil discharged into the sea does not exceed for tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, 1/15,000 of the total quantity of the particular cargo of which the residue formed a part, and for tankers delivered after 31 December 1979, as defined in regulation 1.28.2, 1/30,000 of the total quantity of the particular cargo of which the residue formed a part; and
.6 the tanker has in operation an oil discharge monitoring and control system and a slop tank arrangement as required by regulations 29 and 31 of this Annex.
2 The provisions of paragraph 1 of this regulation shall not apply to the discharge of clean or segregated ballast.
B. Discharges in special areas
3 Subject to the provisions of paragraph 4 of this regulation, any discharge into the sea of oil or oily mixture from the cargo area of an oil tanker shall be prohibited while in a special area*.
4 The provisions of paragraph 3 of this regulation shall not apply to the discharge of clean or segregated ballast.
5 Nothing in this regulation shall prohibit a ship on a voyage only part of which is in a special area from discharging outside the special area in accordance with paragraph 1 of this regulation.
* Refer to regulation 38.6
C. Requirements for oil tankers of less than 150 gross tonnage
6 The requirements of regulations 29, 31 and 32 of this Annex shall not apply to oil tankers of less than 150 gross tonnage, for which the control of discharge of oil under this regulation shall be effected by the retention of oil on board with subsequent discharge of all contaminated washings to reception facilities. The total quantity of oil and water used for washing and returned to a storage tank shall be discharged to reception facilities unless adequate arrangements are made to ensure that any effluent which is allowed to be discharged into the sea is effectively monitored to ensure that the provisions of this regulation are complied with.
D. General requirements
7 Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of a ship or its wake, the Governments of Parties to the present Convention should, to the extent they are reasonably able to do so, promptly investigate the facts bearing on the issue of whether there has been a violation of the provisions of this regulation. The investigation should include, in particular, the wind and sea conditions, the track and speed of the ship, other possible sources of the visible traces in the vicinity, and any relevant oil discharge records.
8 No discharge into the sea shall contain chemicals or other substances in quantities or concentrations which are hazardous to the marine environment or chemicals or other substances introduced for the purpose of circumventing the conditions of discharge specified in this regulation.
9 The oil residues which cannot be discharged into the sea in compliance with paragraphs 1 and 3 of this regulation shall be retained on board for subsequent discharge to reception facilities.
Regulation 35
Crude oil washing operations
1 Every oil tanker operating with crude oil washing systems shall be provided with an Operations and Equipment Manual* detailing the system and equipment and specifying operational procedures. Such a Manual shall be to the satisfaction of the Administration and shall contain all the information set out in the specifications referred to in paragraph 2 of regulation 33 of this Annex. If an alteration affecting the crude oil washing system is made, the Operations and Equipment Manual shall be revised accordingly.
2 With respect to the ballasting of cargo tanks, sufficient cargo tanks shall be crude oil washed prior to each ballast voyage in order that, taking into account the tanker’s trading pattern and expected weather conditions, ballast water is put only into cargo tanks which have been crude oil washed.
3 Unless an oil tanker carries crude oil which is not suitable for crude oil washing, the oil tanker shall operate the crude oil washing system in accordance with the Operations and Equipment Manual.
* Refer to the Standard Format of the Crude Oil Washing Operation and Equipment Manual adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.3(XII), as amended by resolution MEPC.81(43).
Regulation 36
Oil Record Book, Part II – Cargo/ballast operations
1 Every oil tanker of 150 gross tonnage and above shall be provided with an Oil Record Book Part II (Cargo/Ballast Operations). The Oil Record Book Part II, whether as a part of the ship’s official logbook or otherwise, shall be in the Form specified in appendix III to this Annex.
2 The Oil Record Book Part II shall be completed on each occasion, on a tank-to-tank basis if appropriate, whenever any of the following cargo/ballast operations take place in the ship:
.1 loading of oil cargo;
.2 internal transfer of oil cargo during voyage;
.3 unloading of oil cargo;
.4 ballasting of cargo tanks and dedicated clean ballast tanks;
.5 cleaning of cargo tanks including crude oil washing;
.6 discharge of ballast except from segregated ballast tanks;
.7 discharge of water from slop tanks;
.8 closing of all applicable valves or similar devices after slop tank discharge operations;
.9 closing of valves necessary for isolation of dedicated clean ballast tanks from cargo and stripping lines after slop tank discharge operations; and
.10 disposal of residues.
3 For oil tankers referred to in regulation 34.6 of this Annex, the total quantity of oil and water used for washing and returned to a storage tank shall be recorded in the Oil Record Book Part II.
4 In the event of such discharge of oil or oily mixture as is referred to in regu
lation 4 of this Annex or in the event of accidental or other exceptional discharge of oil not excepted by that regulation, a statement shall be made in the Oil Record Book Part II of the circumstances of, and the reasons for, the discharge.
5 Each operation described in paragraph 2 of this regulation shall be fully recorded without delay in the Oil Record Book Part II so that all entries in the book appropriate to that operation are completed. Each completed operation shall be signed by the officer or officers in charge of the operations concerned and each completed page shall be signed by the master of ship. The entries in the Oil Record Book Part II shall be at least in English, French or Spanish. Where entries in an official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of dispute or discrepancy.
6 Any failure of the oil discharge monitoring and control system shall be noted in the Oil Record Book Part II.
7 The Oil Record Book shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board the ship. It shall be preserved for a period of three years after the last entry has been made.
8 The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book Part II on board any ship to which this Annex applies while the ship is in its port or offshore terminals and may make a copy of any entry in that book and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made which has been certified by the master of the ship as a true copy of an entry in the ship’s Oil Record Book Part II shall be made admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book Part II and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
9 For oil tankers of less than 150 gross tonnage operating in accordance with regulation 34.6 of this Annex, an appropriate Oil Record Book should be developed by the Administration.
CHAPTER 5 – PREVENTION OF POLLUTION ARISING FROM AN OIL POLLUTION INCIDENT
Regulation 37
Shipboard oil pollution emergency plan
1 Every oil tanker of 150 gross tonnage and above and every ship other than an oil tanker of 400 gross tonnage and above shall carry on board a shipboard oil pollution emergency plan approved by the Administration.
2 Such a plan shall be prepared based on guidelines* developed by the Organization and written in the working language of the master and officers. The plan shall consist at least of:
.1 the procedure to be followed by the master or other persons having charge of the ship to report an oil pollution incident, as required in article 8 and Protocol I of the present Convention, based on the guidelines developed by the Organization;**
.2 the list of authorities or persons to be contacted in the event of an oil pollution incident;
.3 a detailed description of the action to be taken immediately by persons on board to reduce or control the discharge of oil following the incident; and
.4 the procedures and point of contact on the ship for co-ordinating shipboard action with national and local authorities in combating the pollution.
3 In the case of ships to which regulation 17 of Annex II of the present Convention also apply, such a plan may be combined with the shipboard marine pollution emergency plan for noxious liquid substances required under regulation 17 of Annex II of the present Convention. In this case, the title of such a plan shall be “Shipboard marine pollution emergency plan”.
4 All oil tankers of 5,000 tons deadweight or more shall have prompt access to computerised, shore-based damage stability and residual structural strength calculation programs.
* Refer to the Guidelines for the development of shipboard oil pollution emergency plans adopted by the Organization by resolution MEPC.54(32) as amended by resolution MEPC.86(44).
** Refer to the General Principles for Ship Reporting Systems and Ship Reporting Requirements, including Guidelines for Reporting Incidents Involving Dangerous Goods, Harmful Substances and/or Marine Pollutants adopted by the Organization by resolution A.851(20).
CHAPTER 6 – RECEPTION FACILITIES
Regulation 38
Reception facilities
A. Reception facilities outside special areas
1 The Government of each Party to the present Convention undertakes to ensure the provision at oil loading terminals, repair ports, and in other ports in which ships have oily residues to discharge, of facilities for the reception of such residues and oily mixtures as remain from oil tankers and other ships adequate* to meet the needs of the ships using them without causing undue delay to ships.
2 Reception facilities in accordance with paragraph 1 of this regulation shall be provided in:
.1 all ports and terminals in which crude oil is loaded into oil tankers where such tankers have immediately prior to arrival completed a ballast voyage of not more than 72 hours or not more than 1,200 nautical miles;
.2 all ports and terminals in which oil other than crude oil in bulk is loaded at an average quantity of more than 1,000 tonnes per day;
.3 all ports having ship repair yards or tank cleaning facilities;
.4 all ports and terminals which handle ships provided with the sludge tank(s) required by regulation 12 of this Annex;
.5 all ports in respect of oily bilge waters and other residues, which cannot be discharged in accordance with regulation 15 of this Annex; and
.6 all loading ports for bulk cargoes in respect of oil residues from combination carriers which cannot be discharged in accordance with regulation 34 of this Annex.
3 The capacity for the reception facilities shall be as follows:
.1 Crude oil loading terminals shall have sufficient reception facilities to receive oil and oily mixtures which cannot be discharged in accordance with the provisions of regulation 34.1 of this Annex from all oil tankers on voyages as described in paragraph 2.1 of this regulation.
.2 Loading ports and terminals referred to in paragraph 2.2 of this regulation shall have sufficient reception facilities to receive oil and oily mixtures which cannot be discharged in accordance with the provisions of regulation 34.1 of this Annex from oil tankers which load oil other than crude oil in bulk.
.3 All ports having ship repair yards or tank cleaning facilities shall have sufficient reception facilities to receive all residues and oily mixtures which remain on board for disposal from sh
ips prior to entering such yards or facilities.
.4 All facilities provided in ports and terminals under paragraph 2.4 of this regulation shall be sufficient to receive all residues retained according to regulation 12 of this Annex from all ships that may reasonably be expected to call at such ports and terminals.
.5 All facilities provided in ports and terminals under this regulation shall be sufficient to receive oily bilge waters and other residues which cannot be discharged in accordance with regulation 15 of this Annex.
.6 The facilities provided in loading ports for bulk cargoes shall take into account the special problems of combination carriers as appropriate.
* See resolution MEPC.83(44) “Guidelines for ensuring the adequacy of port waste reception facilities”.
B. Reception facilities within special areas
4 The Government of each Party to the present Convention the coastline of which borders on any given special area shall ensure that all oil loading terminals and repair ports within the special area are provided with facilities adequate for the reception and treatment of all the dirty ballast and tank washing water from oil tankers. In addition all ports within the special area shall be provided with adequate* reception facilities for other residues and oily mixtures from all ships. Such facilities shall have adequate capacity to meet the needs of the ships using them without causing undue delay.
5 The Government of each Party to the present Convention having under its jurisdiction entrances to seawater courses with low depth contour which might require a reduction of draught by the discharge of ballast shall ensure the provision of the facilities referred to in paragraph 4 of this regulation but with the proviso that ships required to discharge slops or dirty ballast could be subject to some delay.
6 With regard to the Red Sea area, Gulfs area, Gulf of Aden area and Oman area of the Arabian Sea:
.1 Each Party concerned shall notify the Organization of the measures taken pursuant to provisions of paragraphs 4 and 5 of this regulation. Upon receipt of sufficient notifications the Organization shall establish a date from which the discharge requirements of regulations 15 and 34 of this Annex in respect of the area in question shall take effect. The Organization shall notify all Parties of the date so established no less than twelve months in advance of that date.
.2 During the period between the entry into force of the present Convention and the date so established, ships while navigating in the special area shall comply with the requirements of regulations 15 and 34 of this Annex as regards discharges outside special areas.
.3 After such date oil tankers loading in ports in these special areas where such facilities are not yet available shall also fully comply with the requirements of regulations 15 and 34 of this Annex as regards discharges within special areas. However, oil tankers entering these special areas for the purpose of loading shall make every effort to enter the area with only clean ballast on board.
.4 After the date on which the requirements for the special area in question take effect, each Party shall notify the Organization for transmission to the Parties concerned of all cases where the facilities are alleged to be inadequate.
.5 At least the reception facilities as prescribed in paragraphs 1, 2 and 3 of this regulation shall be provided one year after the date of entry into force of the present Convention.
7 Notwithstanding paragraphs 4, 5 and 6 of this regulation, the following rules apply to the Antarctic area:
.1 The Government of each Party to the present Convention at whose ports ships depart en route to or arrive from the Antarctic area undertakes to ensure that as soon as practicable adequate facilities are provided for the reception of all sludge, dirty ballast, tank washing water, and other oily residues and mixtures from all ships, without causing undue delay, and according to the needs of the ships using them.
.2 The Government of each Party to the present Convention shall ensure that all ships entitled to fly its flag, before entering the Antarctic area, are fitted with a tank or tanks of sufficient capacity on board for the retention of all sludge, dirty ballast, tank washing water and other oily residues and mixtures while operating in the area and have concluded arrangements to discharge such oily residues at a reception facility after leaving the area.
* See resolution MEPC.83(44) “Guidelines for ensuring the adequacy of port waste reception facilities”.
C. General requirements
8 Each Party shall notify the Organization for transmission to the Parties concerned of all cases where the facilities provided under this regulation are alleged to be inadequate.
CHAPTER 7 – SPECIAL REQUIREMENTS FOR FIXED OR FLOATING PLATFORMS
Regulation 39
Special requirements for fixed or floating platforms
1 This regulation applies to fixed or floating platforms including drilling rigs, floating production, storage and offloading facilities (FPSOs) used for the offshore production and storage of oil, and floating storage units (FSUs) used for the offshore storage of produced oil.
2 Fixed or floating platforms when engaged in the exploration, exploitation and associated offshore processing of sea-bed mineral resources and other platforms shall comply with the requirements of this Annex applicable to ships of 400 gross tonnage and above other than oil tankers, except that:
.1 they shall be equipped as far as practicable with the installations required in regulations 12 and 14 of this Annex;
.2 they shall keep a record of all operations involving oil or oily mixture discharges, in a form approved by the Administration; and
.3 subject to the provisions of regulation 4 of this Annex, the discharge into the sea of oil or oily mixture shall be prohibited except when the oil content of the discharge without dilution does not exceed 15 parts per million.
3 In verifying compliance with this Annex in relation to platforms configured as FPSOs or FSUs, in addition to the requirements of paragraph 2, Administrations should take account of the Guidelines developed by the Organization*
* Refer to resolution MEPC …(..) “Guidelines for the application of MARPOL Annex I requirements to FPSOs and FSUs.”
APPENDICES TO ANNEX I
| Appendix I | List of oils |
| Appendix II | Form of IOPP Certificate and Supplements |
| Appendix III | Form of Oil Record Book |
Appendix I
Asphalt solutions
Blending stocks
Roofers flux
Straight run residue
Oils
Clarified
Crude oil
Mixtures containing crude oil
Diesel oil
Fuel oil no. 4
Fuel oil no. 5
Fuel oil no. 6
Residual fuel oil
Road oil
Transformer oil
Aromatic oil (excluding vegetable oil)
Lubricating oils and blending stocks
Mineral oil
Motor oil
Penetrating oil
Spindle oil
Turbine oil
Distillates
Straight run
Flashed feed stocks
Gas oil
Cracked
Gasoline blending stocks
Alkylates – fuel
Reformates
Polymer – fuel
Gasolines
Casinghead (natural)
Automotive
Aviation
Straight run
Fuel oil no. 1 (kerosene)
Fuel oil no. 1-D
Fuel oil no. 2
Fuel oil no. 2-D
Jet fuels
JP-1 (kerosene)
JP-3
JP-4
JP-5 (kerosene, heavy)
Turbo fuel
Kerosene
Mineral spirit
Naphtha
Solvent
Petroleum
Heartcut distillate oil
* This list of oils shall not necessarily be considered as comprehensive.
Appendix II
Appendix
FORM A
Introduction
The following pages of this section show a comprehensive list of items of machinery space operations which are, when appropriate, to be recorded in the Oil Record Book Part I in accordance with regulation 17 of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL 73/78). The items have been grouped into operational sections, each of which is denoted by a letter Code.
When making entries in the Oil Record Book Part I, the date, operational Code and item number shall be inserted in the appropriate Columns and the required particulars shall be recorded chronologically in the blank spaces.
Each completed operation shall be signed for and dated by the officer or officers in charge. The master of the Ship shall sign each completed page.
The Oil Record Book Part I contains many references to oil quantity. The limited accuracy of tank Measurement devices, temperature variations and clingage will affect the accuracy of these readings. The entries in the Oil Record Book Part I should be considered accordingly.
In the event of accidental or other exceptional discharge of oil statement shall be made in the Oil Record Book Part I of the circumstances of, and the reasons for, the discharge.
Any failure of the oil filtering equipment shall be noted in the Oil Record Book Part I.
The entries in the Oil Record Book Part I, for ships holding an IOPP Certificate, shall be at least in English, French or Spanish. Where entries in official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a dispute or discrepancy.
The Oil Record Book Part I shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board the ship. It shall be preserved for a period of three years after the last entry has been made.
The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book Part I on board any ship to which this Annex applies while the ship is in its port or offshore terminals and may make a copy of any entry in that book and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made which has been certified by the master of the ship as a true copy of an entry in the Oil Record Book Part I shall be made admissible in any juridical proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book Part I and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
LIST OF ITEMS TO BE RECORDED
(A) Ballasting or cleaning of oil fuel tanks
1 Identity of tank(s) ballasted.
2 Whether cleaned
since they last contained oil and, if not, type of oil previously carried.
3 Cleaning process:
.1 position of ship and time at the start and completion of cleaning;
.2 identify tank(s) in which one or another method has been employed (rinsing through, steaming, cleaning with chemicals; type and quantity of chemicals used, in m3);
.3 identity of tank(s) into which cleaning water was transferred.
4 Ballasting:
.1 position of ship and time at start and end of ballasting;
.2 quantity of ballast if tanks are not cleaned, in m3.
(B) Discharge of dirty ballast or cleaning water from oil fuel tanks referred to under Section A)
5 Identity of tank(s).
6 Position of ship at start of discharge.
7 Position of ship on completion of discharge.
8 Ship’s speed(s) during discharge.
9 Method of discharge:
.1 through 15 ppm equipment
.2 to reception facilities.
10 Quantity discharged, in m3.
(C) Collection and disposal of oil residues (sludge and other oil residues)
11. Collection of oil residues
Quantities of oil residues (sludge and other oil residues) retained on board. The quantity should be recorded weekly1: (This means that the quantity must be recorded once a week even if the voyage lasts more than one week)
.1 – identity of tank(s) ……………………
.2 – capacity of tank(s) ……..………..… m3
.3 – total quantity of retention ………. m3
12 Methods of disposal of residue.
State quantity of oil residues disposed of, the tank(s) emptied and the quantity of contents retained in m3:
.1 to reception facilities (identify port)2;
.2 transferred to another (other) tank(s) (indicate tank(s) and the total content of tank(s))
.3 incinerated (indicate total time of operation);
.4 other method (state which).
(D) Non-automatic discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces
13 Quantity discharged or disposed of, in cubic metres.3
14 Time of discharge or disposal (starts and stop).
15 Method of discharge or disposal:
.1 through 15 ppm equipment (state position at start and end);
.2 to reception facilities (identify port)2;
.3 transfer to slop tank or holding tank (indicate tank(s); state the total quantity retained in tank(s), in m3).
(E) Automatic discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces
16 Time and position of ship at which the system has been put into automatic mode of operation for discharge overboard, through 15 ppm equipment.
17 Time when the system has been put into automatic mode of operation for transfer of bilge water to holding tank (identify tank).
18 Time when the system has been put into manual operation.
(F) Condition of the oil filtering equipment
19 Time of system failure4.
20 Time when system has been made operational.
21 Reasons for failure.
1 Tanks listed in item 3.1 of form A and B of the supplement in the IOPP Certificate used for sludge.
2 Ship’s masters should obtain from the operator of the reception facilities, which includes barges and tank trucks, a receipt or certificate detailing the quantity of tank washings, dirty ballast, residues or oily mixtures transferred, together with the time and date of the transfer. This receipt or certificate, if attached to the Oil Record Book Part I, may aid the master of the ship in proving that his ship was not involved in an alleged pollution incident. The receipt or certificate should be kept together with the Oil Record Book Part I.
3 In case of discharge or disposal of bilge water from holding tank(s), state identity and capacity of holding tank(s) and quantity retained in holding tank.
4 The condition of the oil filtering equipment covers also the alarm and automatic stopping devices, if applicable.
(G) Accidental or other exceptional discharges of oil
22 Time of occurrence.
23 Place or position of ship at time of occurrence.
24 Approximate quantity and type of oil.
25 Circumstances of discharge or escape, the reasons therefore and general remarks.
(H) Bunkering of fuel or bulk lubricating oil
26 Bunkering:
.1 Place of bunkering.
.2 Time of bunkering.
.3 Type and quantity of fuel oil and identity of tank(s) (state quantity added, in tonnes and total content of tank(s)).
.4 Type and quantity of lubricating oil and identity of tank(s) (state quantity added, in tonnes and total content of tank (s)).
(I) Additional operational procedures and general remarks
Name of ship ………………………………………………………………………………………………
Distinctive number or letters …………………………………………………………………………
MACHINERY SPACE OPERATIONS
| Date | Code(letter) | Item(number) | Record of operations/signature of officer in charge |
Signature of master ……………………………………………………………………………………
Introduction
The following pages of this section show a comprehensive list of items of cargo and ballast operations which are, when appropriate, to be recorded in the Oil Record Book Part II in accordance with regulation 36 of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL 73/78). The items have been grouped into operational section, each of which is denoted by a code letter.
When making entries in the Oil Record Book Part II, the date, operational code and item number shall be inserted in the appropriate columns and the required particulars shall be recorded chronologically in the blank spaces.
Each completed operation shall be signed for and dated by the officer or officers in charge. Each completed page shall be countersigned by the master of the ship.
In respect of the oil tankers engaged in specific trades in accordance with regulation 2.5 of Annex I of MARPOL 73/78, appropriate entry in the Oil Record Book Part II shall be endorsed by the competent port State authority.*
The Oil Record Book Part II contains many references to oil quantity. The limited accuracy of tank Measurement devices, temperature variations and clingage will affect the accuracy of these readings. The entries in the Oil Record Book Part II should be considered accordingly. In the event of accidental or other exceptional discharge of oil a statement shall be made in the Oil Record Book Part II of the circumstances of, and the reasons for, the discharge.
Any failure of the oil discharge monitoring and control system shall be noted in the Oil Record Book Part II.
The entries in the Oil Record Book Part II, for ships holding an IOPP Certificate, shall be at least in English, French or Spanish. Where entries in an official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a dispute or discrepancy.
The Oil Record Book Part II shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned Ships under tow, shall be kept on board the Ship. It shall be preserved for a period of three years after the last entry has been made.
The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book Part II on board any Ship to which this Annex applies while the Ship is in its port or offshore terminals and may make a copy of any entry in that book and may require the master of the Ship to certify that the copy is a true copy of such entry. Any copy so made which has been certified by the master of the Ship as a true copy of an entry in the Oil Record Book Part II shall be made admissible in any juridical proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book Part II and taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
* This sentence should only be inserted for the Oil Record Book of a tanker engaged in a specific trade.
LIST OF ITEMS TO BE RECORDED
(A) Loading of oil cargo
1 Place of loading.
2 Type of oil loaded and identity of tank(s).
3 Total quantity of oil loaded (state quantity added, in m3 at 15oC and the total content of tank(s), in m3).
(B) Internal transfer of oil cargo during voyage
4 Identity of tank(s):
.1 from:
.2 to: (state quantity transferred and total quantity of tank(s), in m3).
5 Was (were) the tank(s) in 4.1 emptied? (If not, state quantity retained, in m3.)
(C) Unloading of oil cargo
6 Place of unloading.
7 Identity of tank(s) unloaded.
8 Was (were) the tank(s) emptied? (If not, state quantity retained, in m3.)
(D) Crude oil washing (COW tankers only)
(To be completed for each tank being crude oil washed)
9 Port where crude oil washing was carried out or ship’s position if carried out between two discharge ports.
10. Identity of tank(s) washed.1
11 Number of machines in use.
12 Time of start of washing.
13 Washing pattern employed.2
14 Washing line pressure.
15 Time washing was completed or stopped.
16 State method of establishing that tank(s) was (were) dry.
17 Remarks.3
(E) Ballasting of cargo tanks
18 Position of ship at start and end of ballasting.
19 Ballasting process:
.1 identity of tank(s) ballasted;
.2 time of start and end; and
.3 quantity of ballast received. Indicate total quantity of ballast for each tank involved in operation, in m3.
(F) Ballasting of dedicated clean ballast tanks (CBT tankers only)
20 Identity of tank(s) ballasted.
21 Position of ship when water intended for flushing, or port ballast was taken to dedicated clean ballast tank(s).
22 Position of ship when pump(s) and lines were flushed to slop tank.
23 Quantity of the oily water which, after line flushing, is transferred to the slop tank(s) or cargo tank(s) in which slop is preliminarily stored (identify tank(s)). State total quantity, in m3.
24 Position of ship when additional ballast water was taken to dedicated clean ballast tank(s).
25 Time and position of ship when valves separating the dedicated clean ballast tanks from cargo and stripping lines were closed.
26 Quantity of clean ballast taken on board, in m3.
(G) Cleaning of cargo tanks
27 Identity of tank(s) cleaned.
28 Port or ship’s position.
29 Duration of cleaning.
30 Method of cleaning.4
31 Tank washings transferred to:
.1 reception facilities (state port and quantity, in m3)5; and
.2 sloptank(s) or cargo tank(s) designated as sloptank(s) (identify tank(s); state quantity transferred and total quantity, in m3).
1 When an individual tank has more machines than can be operated simultaneously, as described in the Operations and Equipment Manual, then the section being crude oil washed should be identified, e.g. No.2 centre, forward section
2 In accordance with the Operations and Equipment Manual, enter whether single-stage or multi-stage method of washing is employed. If multi-stage method is used, give the vertical arc covered by the machines and the number of times that arc is covered for that particular stage of the programme.
3 If the programmes given in the Operations and Equipment Manual are not followed, then the reasons must be given under Remarks.
4 Hand-hosing, machine washing and/or chemical cleaning. Where chemically cleaned, the chemical concerned and amount used should be stated.
(H) Discharge of dirty ballast
32 Identity of tank(s).
33 Time and position of ship at start of discharge into the sea.
34 Time and position of ship on completion of discharge into the sea.
35 Quantity discharged into the sea, in m3.
36 Ship’s speed(s) during discharge.
37 Was the discharge monitoring and control system in operation during the discharge?
38 Was a regular check kept on the effluent and the surface of the water in the locality of the discharge?
39 Quantity of oily water transferred to slop tank(s) (identify slop tank(s). State totalquantity, in m3.
40 Discharged to shore reception facilities (identify port and quantity involved, in m3).5
(I) Discharge of water from slop tanks into the sea
41 Identity of slop tanks.
42 Time of settling from last entry of residues, or
43 Time of settling from last discharge.
44 Time and position of ship at start of discharge.
45 Ullage of total contents at start of discharge.
46 Ullage of oil/water interface at start of discharge.
47 Bulk quantity discharged, in m3 and rate of discharge, in m3 /hour.
48 Final quantity discharged, in m3 and rate of discharge, in m3/hour.
49 Time and position of ship on completion of discharge.
50 Was the discharge monitoring and control system in operation during the discharge?
51 Ullage of oil/ water interface on completion of discharge, in metres.
52 Ship’s speed(s) during discharge.
53 Was regular check kept on the effluent and the surface of water in the locality of the discharge?
54 Confirm that all applicable valves in the ship’s piping system have been closed on completion of discharge from the slop tanks.
(J) Disposal of residues and oily mixtures not otherwise dealt with
55 Identity of tanks.
56 Quantity disposed of from each tank. (State the quantity retained, in m3.)
57 Method of disposal:
.1 to reception facilities (identify port and quantity involved)5;
.2 mixed with cargo (state quantity);
.3 transferred to (an)other tank(s) (identify tank(s); state quantity transferred and total quantity in tank(s), in m3); and
.4 other method (state which); state quantity disposed of, in m3.
(K) Discharge of clean ballast contained in cargo tanks
58 Position of ship at start of clean ballast.
59 Identity of tank(s) discharged.
60 Was (were) the tank(s) empty on completion?
61 Position of ship on completion if different from 58.
62 Was a regular check kept on the effluent and the surface of the water in the ocality of the discharge?
(L) Discharge of
ballast from dedicated clean ballast tanks (CBT tankers only)
63. Identity of tank(s) discharged.
64. Time and position of ship at start of discharge of clean ballast into the sea.
65 Time and position of ship on completion of discharge into the sea.
66 Quantity discharged, in m3:
.1 into the sea; or
.2 to reception facility (identify port).5
67 Was there any indication of oil contamination of the ballast water before or during ischarge into the sea?
68 Was the discharge monitored by an oil content meter?
69 Time and position of ship when valves separating dedicated clean ballast tanks rom the cargo and stripping lines were closed on completion of deballasting.
5 Ships’ masters should obtain from the operator of the reception facilities, which include barges and tank trucks, a receipt or certificate detailing the quantity or tank washings, dirty ballast, residues or oily mixtures transferred together with the time and date or the transfer. This receipt or certificate, if attached to the Oil Record Book Part II, may aid the master of the ship in proving that his ship was not involved in an alleged pollution incident. The receipt or the certificate should be kept together with the Oil Record Book Part II.
(M) Condition of oil discharge monitoring and control system
70 Time of system failure.
71 Time when system has been made operational.
72 Reasons for failure.
(N) Accidental or other exceptional discharges of oil
73 Time of occurrence.
74 Port or ship’s position at time of occurrence.
75 Approximate quantity, in m3, and type of oil.
76 Circumstances of discharge or escape, the reasons therefore and general remarks.
(O) Additional operational procedures and general remarks
TANKERS ENGAGED IN SPECIFIC TRADES
(P) Loading of ballast water
77 Identity of tank(s) ballasted.
78 Position of ship when ballasted.
79 Total quantity of ballast loaded in cubic metres.
80 Remarks.
(Q) Re-allocation of ballast water within the ship
81. Reason for re-allocation.
(R) Ballast water discharge to reception facility
82 Port(s) where ballast water was discharged.
83 Name or designation of reception facility.
84 Total quantity of ballast water discharged in cubic metres.
85 Date, signature and stamp of port authority official.
Name of ship ………………………………………………………………………………………………
Distinctive number or letters …………………………………………………………………………
CARGO/BALLAST OPERATIONS (OIL TANKERS)
| Date | Code(letter) | Item(number) | Record of operations/signature of officer in charge |
Signature of master
………………………………………
Annex II of MARPOL 73/78
CHAPTER 1 – GENERAL
Regulation 1
Definitions
For the purposes of this Annex:
1 Anniversary date means the day and the month of each year which will correspond to the
date of expiry of the International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk.
2 Associated piping means the pipeline from the suction point in a cargo tank to the shore connection used for unloading the cargo and includes all ship’s piping, pumps and filters which are in open connection with the cargo unloading line.
3 Ballast water
Clean ballast means ballast water carried in a tank which, since it was last used to carry a cargo containing a substance in Category X, Y or Z, has been thoroughly cleaned and the residues resulting there from have been discharged and the tank emptied in accordance with the appropriate requirements of this Annex.
Segregated ballast means ballast water introduced into a tank permanently allocated to the carriage of ballast or cargoes other than oil or Noxious Liquid Substances as variously defined in the Annexes of the present Convention, and which is completely separated from the cargo and oil fuel system.
4 Chemical Codes
Bulk Chemical Code means the Code for the Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.20(22), as amended by the Organization, provided that such amendments are adopted and brought into force in accordance with the provisions of article 16 of the present Convention concerning amendment procedures applicable to an appendix to an Annex.
International Bulk Chemical Code means the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.19(22), as amended by the Organization, provided that such amendments are adopted and brought into force in accordance with the provisions of article 16 of the present Convention concerning amendment procedures applicable to an appendix to an Annex.
5 Depth of water means the charted depth.
6 En route means that the ship is under way at sea on a course or courses, including deviation from the shortest direct route, which as far as practicable for navigational purposes, will cause any discharge to be spread over as great an area of the sea as is reasonable and practicable.
7 Liquid substances are those having a vapour pressure not exceeding 0.28 MPa absolute at a temperature of 37.8°C.
8 Manual means Procedures and Arrangements Manual in accordance with the model given in appendix 6 of this Annex.
9 Nearest land. The term “from the nearest land” means from the baseline from which the territorial sea in question is established in accordance with international law, except that, for the purposes of the present Convention “from the nearest land” off the north-eastern coast of Australia shall mean from the line drawn from a point on the coast of Australia in:
latitude 11°00′ S, longitude 142°08′ E
to a point in latitude 10°35′ S, longitude 141°55′ E,
thence to a point latitude 10°00′ S, longitude 142°00′ E,
thence to a point latitude 9°10′ S, longitude 143°52′ E,
thence to a point latitude 9°00′ S, longitude 144°30′ E,
thence to a point latitude 10°41′ S, longitude 145°00′ E,
thence to a point latitude 13°00′ S, longitude 145°00′ E,
thence to a point latitude 15°00′ S, longitude 146°00′ E,
thence to a point latitude 17°30′ S, longitude 147°00′ E,
thence to a point latitude 21°00′ S, longitude 152°55′ E,
thence to a point latitude 24°30′ S, longitude 154°00′ E,
thence to a point on the coast of Australia
in latitude 24°42′ S, longitude 153°15′ E.
10 Noxious Liquid Substance means any substance indicated in the Pollution Category column of chapter 17 or 18 of the International Bulk Chemical Code or provisionally assessed under the provisions of regulation 6.3 as falling into Category X, Y or Z.
11 PPM means ml/m3.
12 Residue means any noxious liquid substance which remains for disposal.
13 Residue/water mixture means residue to which water has been added for any purpose (e.g. tank cleaning, ballasting, bilge slops).
14 Ship construction
14.1 Ship constructed means a ship the keel of which is laid or which is at a similar stage of construction. A ship converted to a chemical tanker, irrespective of the date of construction, shall be treated as a chemical tanker constructed on the date on which such conversion commenced. This conversion provision shall not apply to the modification of a ship, which complies with all of the following conditions:
.1 the ship is constructed before 1 July 1986; and
.2 the ship is certified under the Bulk Chemical Code to carry only those products identified by the Code as substances with pollution hazards only.
14.2 Similar stage of construction means the stage at which:
.1 construction identifiable with a specific ship begins; and
.2 assembly of that ship has commenced comprising at least 50 tons or one per cent of the estimated mass of all structural material, whichever is less.
15 Solidifying/non-solidifying
15.1 Solidifying Substance means a noxious liquid substance which:
.1 in the case of a substance with a melting point of less than 15°C which is at a temperature of less than 5°C above its melting point at the time of unloading; or
.2 in the case of a substances with a melting point of equal to or greater than 15°C which is at a temperature of less than 10°C above its melting point at the time of unloading.
15.2 Non-solidifying Substance means a noxious liquid substance, which is not a Solidifying Substance.
16 Tanker
16.1 Chemical tanker means a ship constructed or adapted for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;
16.2 NLS tanker means a ship constructed or adapted to carry a cargo of Noxious Liquid Substances in bulk and includes an “oil tanker” as defined in Annex I of the present Convention when certified to carry a cargo or part cargo of Noxious Liquid Substances in bulk.
17 Viscosity
17.1 High-Viscosity Substance means a noxious liquid substance in Category X or Y with a viscosity equal to or greater than 50 mPa.s at the unloading temperature.
17.2 Low-Viscosity Substance means a noxious liquid substance, which is not a High-Viscosity Substance.
Regulation 2
Application
1 Unless expressly provided otherwise the provisions of this Annex shall apply to all ships certified to carry Noxious Liquid Substances in bulk.
2 Where a cargo subject to the provisions of Annex I of the present Convention is carried in a cargo space of an NLS tanker, the appropriate requirements of Annex I of the present Convention shall also apply.
Regulation 3
Exceptions
1 The discharge requirements of this Annex shall not apply to the discharge into the sea of Noxious Liquid Substances or mixtures containing such substances when such a discharge:
.1 is necessary for the purpose of securing the safety of a ship or saving life at sea; or
.2 results from damage to a ship or its equipment:
.1 provided that all reasonable precautions have been taken after the occurrence of the damage or discovery of the discharge for the purpose of preventing or minimizing the discharge; and
.2 except if the owner or the master acted either with intent to cause damage, or recklessly and with knowledge that damage would probably result; or
.3 is approved by the Administration, when being used for the purpose of combating specific pollution incidents in order to minimize the damage from pollution. Any such discharge shall be subject to the approval of any Government in whose jurisdiction it is contemplated the discharge will occur.
Regulation 4
Exemptions
1 With respect to amendments to carriage requirements due to the upgrading of the categorization of a substance, the following shall apply:
.1 where an amendment to this Annex and the International Bulk Chemical Code and Bulk Chemical Code involves changes to the structure or equipment and fittings due to the upgrading of the requirements for the carriage of certain substances, the Administration may modify or delay for a specified period the application of such an amendment to ships constructed before the date of entry into force of that amendment, if the immediate application of such an amendment is considered unreasonable or impracticable. Such relaxation shall be determined with respect to each substance;
.2 the Administration allowing a relaxation of the application of an amendment under this paragraph shall submit to the Organization a report giving details of the ship or ships concerned, the cargoes certified to carry, the trade in which each ship is engaged and the justification for the relaxation, for circulation to the Parties to the Convention for their information and appropriate action, if any and reflect the exemption on the Certificate as referred to in regulation 7 or 9 of this Annex;
.3 Notwithstanding the above, an Administration may exempt ships from the carriage requirements under regulation 11 for ships certified to carry individually identified vegetable oils identified by the relevant footnote in chapter 17 of the IBC Code, provided the ship complies with the following conditions:
.3.1 Subject to this regulation, the NLS tanker shall meet all requirements for ship type 3 as identified in the IBC Code except for cargo tank location;
.3.2 under this regulation, cargo tanks shall be located at the following distances inboard. The entire cargo tank length shall be protected by ballast tanks or spaces other than tanks that carry oil as follows:
.3.2.1 wing tanks or spaces shall be arranged such that cargo tanks are located inboard of the moulded line of the side shell plating nowhere less than 760 mm;
.3.2.2 double bottom tanks or spaces shall be arranged such that the distance between the bottom of the cargo tanks and the moulded line of the bottom shell plating measured at right angles to the bottom shell plating is not less than B/15 (m) or 2.0 m at the centreline, whichever is the lesser. The minimum distance shall be 1.0 metre; and
.3.3.3 the relevant certificate shall indicate the exemption granted.
2 Subject to the provisions of paragraph 3 of this regulation, the provisions of regulation 12.1 need not apply to a ship constructed before 1 July 1986 which is engaged in restricted voyages as determined by the Administration between:
.1 ports or terminals within a State Party to the present Convention; or
.2 ports or terminals of States Parties to the present Convention.
3 The provisions of paragraph 2 of this regulation shall only apply to a ship constructed before 1 July 1986 if:
.1 each time a tank containing Category X, Y or Z substances or mixtures is to be washed or ballasted, the tank is washed in accordance with a prewash procedure approved by the Administration in compliance with appendix 6 of this Annex, and the tank washings are discharged to a reception facility;
.2 subsequent washings or ballast water are discharged to a reception facility or at sea in accordance with other provisions of this Annex;
.3 the adequacy of the reception facilities at the ports or terminals referred to above, for the purpose of this paragraph, is approved by the Governments of the States Parties to the present Convention within which such ports or terminals are situated;
.4 in the case of ships engaged in voyages to ports or terminals under the jurisdiction of other States Parties to the present Convention, the Administration communicates to the Organization, for circulation to the Parties to the Convention, particulars of the exemption, for their information and appropriate action, if any; and
.5 the certificate required under this Annex is endorsed to the effect that the ship is solely engaged in such restricted voyages.
4 For a ship whose constructional and operational features are such that ballasting of cargo tanks is not required and cargo tank washing is only required for repair or dry-docking, the Administration may allow exemption from the provisions of regulation 12, provided that all of the following conditions are complied with:
.1 the design, construction and equipment of the ship are approved by the Administration, having regard to the service for which it is intended;
.2 any effluent from tank washings which may be carried out before a repair or dry-docking is discharged to a reception facility, the adequacy of which is ascertained by the Administration;
.3 the certificate required under this Annex indicates:
.3.1 that each cargo tank is certified for the carriage of a restricted number of substances which are comparable and can be carried alternately in the same tank without intermediate cleaning; and
.3.2 the particulars of the exemption;
.4 the ship carries a Manual approved
by the Administration; and
.5 in the case of ships engaged in voyages to ports or terminals under the jurisdiction of other States Parties to the present Convention, the Administration communicates to the Organization, for circulation to the Parties to the Convention, particulars of the exemption, for their information and appropriate action, if any.
Regulation 5
Equivalents
1 The Administration may allow any fitting, material, appliance or apparatus to be fitted in a ship as an alternative to that required by this Annex if such fitting, material, appliance or apparatus is at least as effective as that required by this Annex. This authority of the Administration shall not extend to the substitution of operational methods to effect the control of discharge of Noxious Liquid Substances as equivalent to those design and construction features which are prescribed by regulations in this Annex.
2 The Administration, which allows a fitting, material, appliance or apparatus as alternative to that required by this Annex, under paragraph 1 of this regulation, shall communicate to the Organization for circulation to the Parties to the Convention, particulars thereof, for their information and appropriate action, if any.
3 Notwithstanding the provisions of paragraphs 1 and 2 of this regulation, the construction and equipment of liquefied gas carriers certified to carry Noxious Liquid Substances listed in the applicable Gas Carrier Code, shall be deemed to be equivalent to the construction and equipment requirements contained in regulations 11 and 12 of this Annex, provided that the gas carrier meets all following conditions:
.1 hold a Certificate of Fitness in accordance with the appropriate Gas Carrier Code for ships certified to carry liquefied gases in bulk;
.2 hold an International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk, in which it is certified that the gas carrier may carry only those Noxious Liquid Substances identified and listed in the appropriate Gas Carrier Code;
.3 be provided with segregated ballast arrangements;
.4 be provided with pumping and piping arrangements, which, to the satisfaction of the Administration, ensure that the quantity of cargo residue remaining in the tank and its associated piping after unloading does not exceed the applicable quantity of residue as required by regulation 12.1, 12.2 or 12.3; and
.5 be provided with a Manual, approved by the Administration, ensuring that no operational mixing of cargo residues and water will occur and that no cargo residues will remain in the tank after applying the ventilation procedures prescribed in the Manual.
CHAPTER 2 – CATEGORIZATION OF NOXIOUS LIQUID SUBSTANCES
Regulation 6
Categorization and listing of Noxious Liquid Substances and other substances
1 For the purpose of the regulations of this Annex, Noxious Liquid Substances shall be divided into four categories as follows:
.1 Category X: Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a major hazard to either marine resources or human health and, therefore, justify the prohibition of the discharge into the marine environment;
.2 Category Y: Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment;
.3 Category Z: Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment;
.4 Other Substances: substances indicated as OS (Other Substances) in the pollution category column of chapter 18 of the International Bulk Chemical Code which have been evaluated and found to fall outside Category X, Y or Z as defined in regulation 6.1 of this Annex because they are, at present, considered to present no harm to marine resources, human health, amenities or other legitimate uses of the sea when discharged into the sea from tank cleaning of deballasting operations. The discharge of bilge or ballast water or other residues or mixtures containing only substances referred to as “Other Substances” shall not be subject to any requirements of the Annex.
2 Guidelines for use in the categorization of Noxious Liquid Substances are given in appendix 1 to this Annex.
3 Where it is proposed to carry a liquid substance in bulk which has not been categorized under paragraph 1 of this regulation, the Governments of Parties to the Convention involved in the proposed operation shall establish and agree on a provisional assessment for the proposed operation on the basis of the guidelines referred to in paragraph 2 of this regulation. Until full agreement among the Governments involved has been reached, the substance shall not be carried. As soon as possible, but not later than 30 days after the agreement has been reached, the Government of the producing or shipping country, initiating the agreement concerned, shall notify the Organization and provide details of the substance and the provisional assessment for annual circulation to all Parties for their information. The Organization shall maintain a register of all such substances and their provisional assessment until such time as the substances are formally included in the IBC Code.
CHAPTER 3 – SURVEYS AND CERTIFICATION
Regulation 7
Survey and certification of chemical tankers
Notwithstanding the provisions of regulations 8, 9, and 10 of this Annex, chemical tankers which have been surveyed and certified by States Parties to the present Convention in accordance with the provisions of the International Bulk Chemical Code or the Bulk Chemical Code, as applicable, shall be deemed to have complied with the provisions of the said regulations, and the certificate issued under that Code shall have the same force and receive the same recognition as the certificate issued under regulation 9 of this Annex.
Regulation 8
Surveys
1 Ships carrying Noxious Liquid Substances in bulk shall be subject to the surveys specified below:
.1 An initial survey before the ship is put in service or before the Certificate required under regulation 9 of this Annex is issued for the first time, and which shall include a complete survey of its structure, equipment, systems, fittings, arrangements and material in so far as the ship is covered by this Annex. This survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with the applicable requirements of this Annex.
.2
A renewal survey at intervals specified by the Administration, but not exceeding 5 years, except where regulation 10.2, 10.5, 10.6, 10.7 of this Annex is applicable. The renewal survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with applicable requirements of this Annex.
.3 An intermediate survey within 3 months before or after the second anniversary date or within 3 months before or after the third anniversary date of the Certificate which shall take the place of one of the annual surveys specified in paragraph 1.4 of this regulation. The intermediate survey shall be such as to ensure that the equipment and associated pump and piping systems fully comply with the applicable requirements of this Annex and are in good working order. Such intermediate surveys shall be endorsed on the Certificate issued under regulation 9 of this Annex.
.4 An annual survey within 3 months before or after each anniversary date of the Certificate including a general inspection of the structure, equipment, systems, fittings, arrangements and material referred to in paragraph 1.1 of this regulation to ensure that they have been maintained in accordance with paragraph 3 of this regulation and that they remain satisfactory for the service for which the ship is intended. Such annual surveys shall be endorsed on the Certificate issued under regulation 9 of this Annex.
.5 An additional survey either general or partial, according to the circumstances, shall be made after a repair resulting from investigations prescribed in paragraph 3 of this regulation, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory and that the ship complies in all respects with the requirements of this Annex.
2.1 Surveys of ships, as regards the enforcement of the provisions of this Annex, shall be carried out by officers of the Administration. The Administration may, however, entrust the surveys either to surveyors nominated for the purpose or to organizations recognized by it.
2.2 The recognized organization, referred to in paragraph 2.1 of this paragraph shall comply with the Guidelines adopted by the Organization by resolution A.739(18), as may be amended by the Organization, and the specification adopted by the Organization by resolution A.789(19), as may be amended by the Organization, provided that such amendments are adopted, brought into force and take effect in accordance with the provisions of article 16 of the present Convention concerning the amendment procedures applicable to this Annex.
2.3 An Administration nominating surveyors or recognizing organizations to conduct surveys as set forth in paragraph 2.1 of this regulation shall, as a minimum, empower any nominated surveyor or recognized organization to:
.1 require repairs to a ship; and
.2 carry out surveys if requested by the appropriate authorities of a port State.
2.4 The Administration shall notify the Organization of the specific responsibilities and conditions of the authority delegated to the nominated surveyors or recognized organizations, for circulation to Parties to the present Convention for the information of their officers.
2.5 When a nominated surveyor or recognized organization determines that the condition of the ship or its equipment does not correspond substantially with the particulars of the Certificate, or is such that the ship is not fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment, such surveyor or organization shall immediately ensure that corrective action is taken and shall in due course notify the Administration. If such corrective action is not taken the Certificate should be withdrawn and the Administration shall be notified immediately, and if the ship is in a port of another Party, the appropriate authorities of the port State shall also be notified immediately. When an officer of the Administration, a nominated surveyor or a recognized organization has notified the appropriate authorities of the port State, the Government of the port State concerned shall give such officer, surveyor or organization any necessary assistance to carry out their obligations under this regulation. When applicable, the Government of the port State concerned shall take such steps as will ensure that the ship shall not sail until it can proceed to sea or leave the port for the purpose of proceeding to the nearest appropriate repair yard available without presenting an unreasonable threat of harm to the marine environment.
2.6 In every case, the Administration concerned shall fully guarantee the completeness and efficiency of the survey and shall undertake to ensure the necessary arrangements to satisfy this obligation.
3.1 The condition of the ship and its equipment shall be maintained to conform with the provisions of the present Convention to ensure that the ship in all respects will remain fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment.
3.2 After any survey of the ship required under paragraph 1 of this regulation has been completed, no change shall be made in the structure, equipment, systems, fittings, arrangements or material covered by the survey, without the sanction of the Administration, except the direct replacement of such equipment and fittings.
3.3 Whenever an accident occurs to a ship or a defect is discovered which substantially affects the integrity of the ship or the efficiency or completeness of its equipment covered by this Annex, the master or owner of the ship shall report at the earliest opportunity to the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate, who shall cause investigations to be initiated to determine whether a survey as required by paragraph 1 of this regulation is necessary. If the ship is in a port of another Party, the master or owner shall also report immediately to the appropriate authorities of the port State and the nominated surveyor or recognized organization shall ascertain that such report has been made.
Regulation 9
Issue or endorsement of Certificate
1 An International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk shall be issued, after an initial or renewal survey in accordance with the provisions of regulation 8 of this Annex, to any ship intended to carry Noxious Liquid Substances in bulk and which is engaged in voyages to ports or terminals under the jurisdiction of other Parties to the Convention.
2 Such Certificate shall be issued or endorsed either by the Administration or by any person or organization duly authorized by it. In every case, the Administration assumes full responsibility for the Certificate.
3.1 The Government of a Party to the Convention may, at the request of the Administration, cause a ship to be surveyed and, if satisfied that the provisions of this Annex are complied with, shall issue or authorize the issue of an International Pollution Prevention Certificate for the Carriage of Noxio
us Liquid Substances in Bulk to the ship and, where appropriate, endorse or authorize the endorsement of that Certificate on the ship, in accordance with this Annex.
3.2 A copy of the Certificate and a copy of the survey report shall be transmitted as soon as possible to the requesting Administration.
3.3 A Certificate so issued shall contain a statement to the effect that it has been issued at the request of the Administration and it shall have the same force and receive the same recognition as the Certificate issued under paragraph 1 of this regulation.
3.4 No International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk shall be issued to a ship, which is entitled to fly the flag of a State which is not a party.
4 The International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk shall be drawn up in the form corresponding to the model given in appendix 3 to this Annex and shall be at least in English, French or Spanish. Where entries in an official national language of the State whose flag the ship is entitled to fly are also used, this shall prevail in the case of a dispute or discrepancy.
Regulation 10
Duration and validity of Certificate
1 An International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk shall be issued for a period specified by the Administration which shall not exceed 5 years.
2.1 Notwithstanding the requirements of paragraph 1 of this regulation, when the renewal survey is completed within 3 months before the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing Certificate.
2.2 When the renewal survey is completed after the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing Certificate.
2.3 When the renewal survey is completed more than 3 months before the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of completion of the renewal survey.
3 If a Certificate is issued for a period of less than 5 years, the Administration may extend the validity of the Certificate beyond the expiry date to the maximum period specified in paragraph 1 of this regulation, provided that the surveys referred to in regulation 8.1.3 and 8.1.4 of this Annex applicable when a Certificate is issued for a period of 5 years are carried out as appropriate.
4 If a renewal survey has been completed and a new Certificate cannot be issued or placed on board the ship before the expiry date of the existing Certificate, the person or organization authorized by the Administration may endorse the existing Certificate and such a Certificate shall be accepted as valid for a further period which shall not exceed 5 months from the expiry date.
5 If a ship at the time when a Certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the Certificate but this extension shall be granted only for the purpose of allowing the ship to complete its voyage to the port in which it is to be surveyed, and then only in cases where it appears proper and reasonable to do so. No Certificates shall be extended for a period longer than 3 months, and a ship to which an extension is granted shall not, on its arrival in the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port without having a new Certificate. When the renewal survey is completed, the new Certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing Certificate before the extension was granted.
6 A Certificate issued to a ship engaged on short voyages which has not been extended under the foregoing provisions of this regulation may be extended by the Administration for a period of grace of up to one month from the date of expiry stated on it. When the renewal survey is completed, the new Certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing Certificate before the extension was granted.
7 In special circumstances, as determined by the Administration, a new Certificate need not be dated from the date of expiry of the existing Certificate as required by paragraph 2.2, 5 or 6 of this regulation. In these special circumstances, the new Certificate shall be valid to a date not exceeding 5 years from the date of completion of the renewal survey.
8 If an annual or intermediate survey is completed before the period specified in regulation 8 of this Annex, then:
.1 the anniversary date shown on the Certificate shall be amended by endorsement to a date which shall not be more than 3 months later than the date on which the survey was completed;
.2 the subsequent annual or intermediate survey required by regulation 8 of this Annex shall be completed at the intervals prescribed by that regulation using the new anniversary date;
.3 the expiry date may remain unchanged provided one or more annual or intermediate surveys, as appropriate, are carried out so that the maximum intervals between the surveys prescribed by regulation 8 of this Annex are not exceeded.
9 A Certificate issued under regulation 9 of this Annex shall cease to be valid in any of the following cases:
.1 if the relevant surveys are not completed within the periods specified under regulation 8.1 of this Annex;
.2 if the Certificate is not endorsed in accordance with regulation 8.1.3 or 8.1.4 of this Annex;
.3 upon transfer of the ship to the flag of another State. A new Certificate shall only be issued when the Government issuing the new Certificate is fully satisfied that the ship is in compliance with the requirements of regulation 8.3.1 and 8.3.2 of this Annex. In the case of a transfer between Parties, if requested within 3 months after the transfer has taken place, the Government of the Party whose flag the ship was formerly entitled to fly shall, as soon as possible, transmit to the Administration copies of the Certificate carried by the ship before the transfer and, if available, copies of the relevant survey reports.
CHAPTER 4 – DESIGN, CONSTRUCTION, ARRANGEMENT AND EQUIPMENT
Regulation 11
Design, construction, equipment and operations
1 The design, construction, equipment and operation of ships certified to carry Noxious Liquid Substances in bulk identified in chapter 17 of the International Bulk Chemical Code, shall be in compliance with the following provisions to minimize the uncontrolled discharge into the sea of such substances:
.1 the International Bulk Chemical Code when the chemical tanker is constructed on or after 1 July 1986; or
.2 the Bulk Chemical Code as referred to in paragraph 1.7.2 of that Code for:
.2.1 ships for which the building contract is placed on or after 2 November 1973 but constructed before 1 July 1986, and which are engaged on voyages to ports or terminals under the jurisdiction of other States Parties to the Convention; and
.2.2 ships constructed on or after 1 July 1983 but before 1 July 1986, which are engaged solely on voyages between ports or terminals within the State the flag of which the ship is entitled to fly.
.3 The Bulk Chemical Code as referred to in paragraph 1.7.3 of that Code for:
.3.1 ships for which the building contract is placed before 2 November 1973 and which are engaged on voyages to ports or terminals under the jurisdiction of other States Parties to the Convention; and
.3.2 ships constructed before 1 July 1983, which are solely engaged on, voyages between ports or terminals within the State the flag of which the ship is entitled to fly.
2 In respect of ships other than chemical tankers or liquefied gas carriers certified to carry Noxious Liquid Substances in bulk identified in chapter 17 of the International Bulk Chemical Code, the Administration shall establish appropriate measures based on the Guidelines* developed by the Organization in order to ensure that the provisions shall be such as to minimize the uncontrolled discharge into the sea of such substances.
* Reference is made to resolutions A.673(16) and MEPC.120(52).
Regulation 12
Pumping, piping, unloading arrangements and slop tanks
1 Every ship constructed before 1 July 1986 shall be provided with a pumping and piping arrangement to ensure that each tank certified for the carriage of substances in Category X or Y does not retain a quantity of residue in excess of 300 litres in the tank and its associated piping and that each tank certified for the carriage of substances in Category Z does not retain a quantity of residue in excess of 900 litres in the tank and its associated piping. A performance test shall be carried out in accordance with appendix 5 of this Annex.
2 Every ship constructed on or after 1 July 1986 but before 1 January 2007 shall be provided with a pumping and piping arrangement to ensure that each tank certified for the carriage of substances in Category X or Y does not retain a quantity of residue in excess of 100 litres in the tank and its associated piping and that each tank certified for the carriage of substances in Category Z does not retain a quantity of residue in excess of 300 litres in the tank and its associated piping. A performance test shall be carried out in accordance with appendix 5 of this Annex.
3 Every ship constructed on or after 1 January 2007 shall be provided with a pumping and piping arrangement to ensure that each tank certified for the carriage of substances in Category X, Y or Z does not retain a quantity of residue in excess of 75 litres in the tank and its associated piping. A performance test shall be carried out in accordance with appendix 5 of this Annex.
4 For a ship other than a chemical tanker constructed before 1 January 2007 which cannot meet the requirements for the pumping and piping arrangements for substances in Category Z referred to in paragraphs 1 and 2 of this regulation no quantity requirement shall apply. Compliance is deemed to be reached if the tank is emptied to the most practicable extent.
5 Pumping performance tests referred to in paragraphs 1, 2 and 3 of this regulation shall be approved by the Administration. Pumping performance tests shall use water as the test medium.
6 Ships certified to carry substances of Category X, Y or Z shall have an underwater discharge outlet (or outlets).
7 For ships constructed before 1 January 2007 and certified to carry substances in Category Z an underwater discharge outlet as required under paragraph 6 of this regulation is not mandatory.
8 The underwater discharge outlet (or outlets) shall be located within the cargo area in the vicinity of the turn of the bilge and shall be so arranged as to avoid the re-intake of residue/water mixtures by the ship’s seawater intakes.
9 The underwater discharge outlet arrangement shall be such that the residue/water mixture discharged into the sea will not pass through the ship’s boundary layer. To this end, when the discharge is made normal to the ship’s shell plating, the minimum diameter of the discharge outlet is governed by the following equation:
………Qdd = —-………5Ld
where:
d = minimum diameter of the discharge outlet (m)
Ld = distance from the forward perpendicular to the discharge outlet (m)
Qd = the maximum rate selected at which the ship may discharge a residue/water mixture through the outlet (m3/h).
10 When the discharge is directed at an angle to the ship’s shell plating, the above relationship shall be modified by substituting for Qd the component of Qd which is normal to the ship’s shell plating.
11 Slop tanks
Although this Annex does not require the fitting of dedicated slop tanks, slop tanks may be needed for certain washing procedures. Cargo tanks may be used as slop tanks.
CHAPTER 5 – OPERATIONAL DISCHARGES OF RESIDUES OF NOXIOUS LIQUID SUBSTANCES
Regulation 13
Control of discharges of residues of Noxious Liquid Substances
Subject to the provisions of regulation 3 of this Annex the control of discharges of residues of Noxious Liquid Substances or ballast water, tank washings or other mixtures containing such substances shall be in compliance with the following requirements.
1 Discharge provisions
1.1 The discharge into the sea of residues of substances assigned to Category X, Y or Z or of those provisionally assessed as such or ballast water, tank washings or other mixtures containing such substances shall be prohibited unless such discharges are made in full compliance with the applicable operational requirements contained in this Annex.
1.2 Before any prewash or discharge procedure is carried out in accordance with this regulation, the relevant tank shall be emptied to the maximum extent in accordance with the procedures prescribed in the Manual.
1.3 The carriage of substances which have not been categorized, provisionally assessed or evaluated as referred to in regulation 6 of this Annex or of ballast water, tank washings or other mixtures containing such residues shall be prohibited along with any consequential discharge of such substances into the sea.
2 Discharge standards
2.1 Where the provisions in this regulation allow the discharge into the sea of residues of substances in Category X, Y or Z or of those provisionally asse
ssed as such or ballast water, tank washings or other mixtures containing such substances the following discharge standards shall apply:
.1 the ship is proceeding en route at a speed of at least 7 knots in the case of self-propelled ships or at least 4 knots in the case of ships which are not self-propelled;
.2 the discharge is made below the waterline through the underwater discharge outlet(s) not exceeding the maximum rate for which the underwater discharge outlet(s) is (are) designed; and
.3 the discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres.
2.2 For ships constructed before 1 January 2007 the discharge into the sea of residues of substances in Category Z or of those provisionally assessed as such or ballast water, tank washings or other mixtures containing such substances below the waterline is not mandatory.
2.3 The Administration may waive the requirements of paragraph 2.1.3 for substances in Category Z, regarding the distance of not less than 12 nautical miles from the nearest land for ships solely engaged in voyages within waters subject to the sovereignty or jurisdiction of the State the flag, of which, the ship is entitled to fly. In addition, the Administration may waive the same requirement regarding the discharge distance of not less than 12 nautical miles from the nearest land for a particular ship entitled to fly the flag of their State, when engaged in voyages within waters subject to the sovereignty or jurisdiction of one adjacent state after the establishment of an agreement, in writing, of a waiver between the two coastal States involved provided that no third party will be affected. Information on such agreement shall be communicated to the Organization within 30 days for further circulation to the Parties to the Convention for their information and appropriate action if any.
3 Ventilation of cargo residues
Ventilation procedures approved by the Administration may be used to remove cargo residues from a tank. Such procedures shall be in accordance with appendix 7 of this Annex. Any water subsequently introduced into the tank shall be regarded as clean and shall not be subject to the discharge requirements in this Annex.
4 Exemption for a prewash
On request of the ship’s master an exemption for a prewash may be granted by the Government of the receiving Party, where it is satisfied that:
.1 the unloaded tank is to be reloaded with the same substance or another substance compatible with the previous one and that the tank will not be washed or ballasted prior to loading; or
.2 the unloaded tank is neither washed nor ballasted at sea. The prewash in accordance with the applicable paragraph of this regulation shall be carried out at another port provided that it has been confirmed in writing that a reception facility at that port is available and is adequate for such a purpose; or
.3 the cargo residues will be removed by a ventilation procedure approved by the Administration in accordance with appendix 7 of this Annex.
5 The use of cleaning agents or additives
5.1 When a washing medium other than water, such as mineral oil or chlorinated solvent, is used instead of water to wash a tank, its discharge shall be governed by the provisions of either Annex I or Annex II, which would apply to the medium had it been carried as cargo. Tank washing procedures involving the use of such a medium shall be set out in the Manual and be approved by the Administration.
5.2 When small amounts of cleaning additives (detergent products) are added to water in order to facilitate tank washing, no additives containing Pollution Category X components shall be used except those components that are readily biodegradable and present in a total concentration of less than 10% of the cleaning additive. No restrictions additional to those applicable to the tank due to the previous cargo shall apply.
6 Discharge of residues of Category X
6.1 Subject to the provision of paragraph 1, the following provisions shall apply:
.1 A tank from which a substance in Category X has been unloaded, shall be prewashed before the ship leaves the port of unloading. The resulting residues shall be discharged to a reception facility until the concentration of the substance in the effluent to such facility, as indicated by analyses of samples of the effluent taken by the surveyor, is at or below 0.1% by weight. When the required concentration level has been achieved, remaining tank washings shall continue to be discharged to the reception facility until the tank is empty. Appropriate entries of these operations shall be made in the Cargo Record Book and endorsed by the surveyor referred to in regulation 16.1.
.2 Any water subsequently introduced into the tank may be discharged into the sea in accordance with the discharge standards in regulation 13.2.
.3 Where the Government of the receiving party is satisfied that it is impracticable to measure the concentration of the substance in the effluent without causing undue delay to the ship, that Party may accept an alternative procedure as being equivalent to obtain the required concentration in regulation 13.6.1.1 provided that:
.3.1 the tank is prewashed in accordance with a procedure approved by the Administration in compliance with appendix 6 of this Annex; and
.3.2 appropriate entries shall be made in the Cargo Record Book and endorsed by the surveyor referred to in regulation 16.1.
7 Discharge of residues of Category Y and Z
7.1 Subject to the provision of paragraph 1, the following provisions shall apply:
.1 With respect to the residue discharge procedures for substances in Category Y or Z the discharge standards in regulation 13.2 shall apply.
.2 If the unloading of a substance of Category Y or Z is not carried out in accordance with the Manual, a prewash shall be carried out before the ship leaves the port of unloading, unless alternative measures are taken to the satisfaction of the surveyor referred to in regulation 16. 1 of this Annex to remove the cargo residues from the ship to quantities specified in this Annex. The resulting tank washings of the prewash shall be discharged to a reception facility at the port of unloading or another port with a suitable reception facility provided that it has been confirmed in writing that a reception facility at that port is available and is adequate for such a purpose.
.3 For High-Viscosity or Solidifying Substances in Category Y the following shall apply:
.3.1 a prewash procedure as specified in appendix 6 shall be applied;
.2 the residue/water mixture generated during the prewash shall be discharged to a reception facility until the tank is empty; and
.3.3 any water subsequently introduced into the tank may be discharged into the sea in accordance with the discharge standards in regulation 13.2.
7.2 Operationa
l requirements for ballasting and deballasting
7.2.1 After unloading, and, if required, after a prewash, a cargo tank may be ballasted. Procedures for the discharge of such ballast are set out in regulation 13.2.
7.2.2 Ballast introduced into a cargo tank which has been washed to such an extent that the ballast contains less than 1 ppm of the substance previously carried, may be discharged into the sea without regard to the discharge rate, ship’s speed and discharge outlet location, provided that the ship is not less than 12 miles from the nearest land and in water that is not less than 25 metres deep. The required degree of cleanliness has been achieved when a prewash as specified in appendix 6 has been carried out and the tank has been subsequently washed with a complete cycle of the cleaning machine for ships built before 1 July 1994 or with a water quantity not less than that calculated with k=1.0.
7.2.3 The discharge into the sea of clean or segregated ballast shall not be subject to the requirements of this Annex.
8 Discharges in the Antarctic Area
8.1 Antarctic Area means the sea area south of latitude 60°S.
8.2 In the Antarctic area any discharge into the sea of Noxious Liquid Substances or mixtures containing such substances is prohibited.
Regulation 14
Procedures and Arrangements Manual
1 Every ship certified to carry substances of Category X, Y or Z shall have on board a Manual approved by the Administration. The Manual shall have a standard format in compliance with appendix 4 to this Annex. In the case of a ship engaged in international voyages on which the language used is not English, French or Spanish, the text shall include a translation into one of these languages.
2 The main purpose of the Manual is to identify for the ship’s officers the physical arrangements and all the operational procedures with respect to cargo handling, tank cleaning, slops handling and cargo tank ballasting and deballasting which must be followed in order tocomply with the requirements of this Annex.
Regulation 15
Cargo record book
1 Every ship to which this Annex applies shall be provided with a Cargo Record Book, whether as part of the ship’s official logbook or otherwise, in the form specified in appendix 2 to this Annex.
2 After completion of any operation specified in appendix 2 to this Annex, the operation shall be promptly recorded in the Cargo Record Book.
3 In the event of an accidental discharge of a noxious liquid substance or a mixture containing such a substance or a discharge under the provisions of regulation 3 of this Annex, an entry shall be made in the Cargo Record Book stating the circumstances of, and the reason for, the discharge.
4 Each entry shall be signed by the officer or officers in charge of the operation concerned and each page shall be signed by the master of the ship. The entries in the Cargo Record Book, for ships holding an International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk or a certificate referred to in regulation 7 of this Annex shall be at least in English, French or Spanish. Where entries in an official national language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a dispute or discrepancy.
5 The Cargo Record Book shall be kept in such a place as to be readily available for inspection and, except in the case of unmanned ships under tow, shall be kept on board the ship. It shall be retained for a period of three years after the last entry has been made.
6 The competent authority of the Government of a Party may inspect the Cargo Record Book on board any ship to which this Annex applies while the ship is in its port, and may make a copy of any entry in that book and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made which has been certified by the master of the ship as a true copy of an entry in the ship’s Cargo Record Book shall be made admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of a Cargo Record Book and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
CHAPTER 6 – MEASURES OF CONTROL BY PORT STATES
Regulation 16
Measures of control
1 The Government of each Party to the Convention shall appoint or authorize surveyors for the purpose of implementing this regulation. The surveyors shall execute control in accordance with control procedures developed by the Organization.*
2 When a surveyor appointed or authorized by the Government of the Party to theConvention has verified that an operation has been carried out in accordance with the requirements of the Manual, or has granted an exemption for a prewash, then that surveyor shall make an appropriate entry in the Cargo Record Book.
3 The master of a ship certified to carry Noxious Liquid Substances in bulk shall ensure that the provisions of regulation 13 and of this regulation have been complied with and that the Cargo Record Book is completed in accordance with regulation 15 whenever operations as referred to in that regulation take place.
4 A tank which has carried a Category X substance shall be prewashed in accordance with regulation 13.6. The appropriate entries of these operations shall be made in the Cargo Record Book and endorsed by the surveyor referred to under paragraph 1 of this regulation.
5 Where the Government of the receiving party is satisfied that it is impracticable to measure the concentration of the substance in the effluent without causing undue delay to the ship, that Party may accept the alternative procedure referred to in regulation 13.6.3 provided that the surveyor referred to under paragraph 1 of this regulation certifies in the Cargo Record Book that:
.1 the tank, its pump and piping systems have been emptied; and
.2 the prewash has been carried out in accordance with the provisions of appendix 6 of this Annex; and
.3 the tank washing resulting from such prewash have been discharged to a reception facility and the tank is empty.
6 At the request of the ship’s master, the Government of the receiving Party may exempt the ship from the requirements for a prewash referred to in the applicable paragraphs of regulation 13, when one of the conditions of regulation 13.4 is met.
7 An exemption referred to in paragraph 6 of this regulation may only be granted by the Government of the receiving Party to a ship engaged in voyages to ports or terminals under the jurisdiction of other States Parties to the present Convention. When such an exemption has been granted, the appropriate entry made in the Cargo Record Book shall be endorsed by the surveyor referred to in paragraph 1 of this regulation.
8 If the unloading is not carried out in accordance with the pumping conditions for the tank approved by the Administrations and based on appendix 5 of this Annex, alternative measures may be taken to the satisfaction of the surveyor referred to in paragraph 1 of this regulation to remove the cargo residues from the ship to quantities specified in regulation 12 as applicable. The appropriate entries shall be made in the Cargo Record Book.
9 Port State control on operational requirements**
9.1 A ship when in a port of another Party is subject to inspection by officers duly authorized by such Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of pollution by Noxious Liquid Substances.
9.2 In the circumstances given in paragraph 9.1 of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation has been brought to order in accordance with the requirements of this Annex.
9.3 Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
9.4 Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
* Refer to the Procedures for port State control adopted by the Organization by resolution A.787(19) as amended by A.882(21).
** Refer to the Procedures for port State control adopted by the Organization by resolution A.787(19) as amended by A.882(21)
CHAPTER 7 – PREVENTION OF POLLUTION ARISING FROM AN INCIDENT INVOLVING NOXIOUS LIQUID SUBSTANCES
Regulation 17
Shipboard marine pollution emergency plan for Noxious Liquid Substances
1 Every ship of 150 gross tonnage and above certified to carry Noxious Liquid Substances in bulk shall carry on board a shipboard marine pollution emergency plan for Noxious Liquid Substances approved by the Administration.
2 Such a plan shall be based on the Guidelines* developed by the Organization and written in a working language or languages understood by the master and officers. The plan shall consist at least of:
.1 the procedure to be followed by the master or other persons having charge of the ship to report a Noxious Liquid Substances pollution incident, as required in article 8 and Protocol I of the present Convention, based on the Guidelines developed by the Organization**;
.2 the list of authorities or persons to be contacted in the event of a Noxious Liquid Substances pollution incident;
.3 a detailed description of the action to be taken immediately by persons on board to reduce or control the discharge of Noxious Liquid Substances following the incident; and
.4 the procedures and point of contact on the ship for co-ordinating shipboard action with national and local authorities in combating the pollution.
3 In the case of ships to which regulation 37 of Annex I of the Convention also applies, such a plan may be combined with the shipboard oil pollution emergency plan required under regulation 37 of Annex I of the Convention. In this case, the title of such a plan shall be “Shipboard marine pollution emergency plan”.
* Refer to “Guidelines for the development of shipboard marine pollution emergency plans for oil and/or Noxious Liquid Substances” adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.85(44), as amended by resolution MEPC. …….(53).
** Refer to General Principles for Ship Reporting Systems and Ship Reporting Requirements, including Guidelines for Reporting Incidents Involving Dangerous Goods, Harmful Substances and/or Marine Pollutants adopted by the Organization by resolution A.851(20).
CHAPTER 8 – RECEPTION FACILITIES
Regulation 18
Reception facilities and cargo unloading terminal arrangements
1 The Government of each Party to the Convention undertakes to ensure the provision of reception facilities according to the needs of ships using its ports, terminals or repair ports as follows:
.1 ports and terminals involved in ships’ cargo handling shall have adequate facilities for the reception of residues and mixtures containing such residues of Noxious Liquid Substances resulting from compliance with this Annex, without undue delay for the ships involved.
.2 ship repair ports undertaking repairs to NLS tankers shall provide facilities adequate for the reception of residues and mixtures containing Noxious Liquid Substances for ships calling at that port.
2 The Government of each Party shall determine the types of facilities provided for the purpose of paragraph 1 of this regulation at each cargo loading and unloading port, terminal and ship repair port in its territories and notify the Organization thereof.
3 The Governments of Parties to the Convention, the coastlines of which border on any given special area, shall collectively agree and establish a date by which time the requirement of paragraph 1 of this regulation will be fulfilled and from which the requirements of the applicable paragraphs of regulation 13 in respect of that area shall take effect and notify the Organization of the date so established at least six months in advance of that date. The Organization shall then promptly notify all Parties of that date.
4 The Government of each Party to the Convention shall undertake to ensure that cargo unloading terminals shall provide arrangements to facilitate stripping of cargo tanks of ships unloading Noxious Liquid Substances at these terminals. Cargo hoses and piping systems of the terminal, containing Noxious Liquid Substances received from ships unloading these substances at the terminal, shall not be drained back to the ship.
5 Each Party shall notify the Organization, for transmission to the Parties concerned, of any case where facilities required under paragraph 1 or arrangements required under paragraph 3 of this regulation are alleged to be inadequate.
Appendix 1
Products are assigned to Pollution Categories based on an evaluation of their properties as reflected in the resultant GESAMP Hazard Profile as shown in the table below:
* Reference is made to MEPC.1/Circ .512 on the Revised Guidelines for provisional assessment of liquid substances transported in bulk.
Appendix 2
INTRODUCTION
The following pages show a comprehensive list of items of cargo and ballast operations which are, when appropriate, to be recorded in the Cargo Record Book on a tank to tank basis in accordance with regulation 15.2 of Annex II of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL 73/78), as amended. The items have been grouped into operational sections, each of which is denoted by a letter.
When making entries in the Cargo Record Book, the date, operational code and item number shall be inserted in the appropriate columns and the required particulars shall be recorded chronologically in the blank spaces.
Each completed operation shall be signed for and dated by the officer or officers in charge and, if applicable, by a surveyor authorized by the competent authority of the State in which the ship is unloading. Each completed page shall be countersigned by the master of the ship.
List of items to be recorded
Entries are required for operations involving all Categories of substances.
(A) Loading of cargo
1 Place of loading.
2 Identify tank(s), name of substance(s) and Category(ies).
(B) Internal transfer of cargo
3 Name and Category of cargo(es) transferred.
4 Identity of tanks:
.1 from :
.2 to :
5 Was (were) tank(s) in 4.1 emptied?
6 If not, quantity remaining in tank(s).
(C) Unloading of cargo
7 Place of unloading.
8 Identity of tank(s) unloaded.
9 Was (were) tank(s) emptied?
.1 If yes, confirm that the procedure for emptying and stripping has been performed in accordance with the ship’s Procedures and Arrangements Manual (i.e. list, trim, stripping temperature).
.2 If not, quantity remaining in tank(s).
10 Does the ship’s Procedures and Arrangements Manual require a prewash with subsequent disposal to reception facilities?
11 Failure of pumping and/or stripping system:
.1 time and nature of failure;
.2 reasons for failure;
.3 time when system has been made operational.
(D) Mandatory prewash in accordance with the ship’s Procedures and Arrangements Manual
12 Identify tank(s), substance(s) and Category(ies).
13 Washing method:
.1 number of cleaning machines per tank;
.2 duration of wash/washing cycles;
.3 hot/cold wash.
14 Prewash slops transferred to:
.1 reception facility in unloading port (identify port)*;
.2 reception facility otherwise (identify port)*.
(E) Cleaning of cargo tanks except mandatory prewash (other prewash operations, final wash, ventilation etc.)
15 State time, identify tank(s), substance(s) and Category(ies) and state:
.1 washing procedure used;
.2 cleaning agent(s) (identify agent(s) and quantities);
.3 ventilation procedure used (state number of fans used, duration of ventilation).
16 Tank washings transferred:
.1 into the sea;
.2 to reception facility (identify port)*;
.3 to slops collecting tank (identify tank).
(F) Discharge into the sea of tank washings
17 Identify tank(s):
.1 Were tank washings discharged during cleaning of tank(s)? If so at what rate?
.2 Were tank washing(s) discharged from a slops collecting tank? If so, state quantity and rate of discharge.
18 Time pumping commenced and stopped.
19 Ship’s speed during discharge.
(G) Ballasting of cargo tanks
20 Identity of tank(s) ballasted.
21 Time at start of ballasting.
(H) Discharge of ballast water from cargo tanks
22 Identity of tank(s).
23 Discharge of ballast:
.1 into the sea;
.2 to reception facilities (identify port)*.
24 Time ballast discharge commenced and stopped.
25 Ship’s speed during discharge.
* Ship’s masters should obtain from the operator of the reception facilities, which include barges and tank trucks, a receipt or certificate specifying the quantity of tank washings transferred, together with the time and date of the transfer. The receipt or certificate should be kept together with the cargo record book.
(I) Accidental or other exceptional discharge
26 Time of occurrence.
27 Approximate quantity, substance(s) and Category(ies).
28 Circumstances of discharge or escape and general remarks.
(J) Control by authorized surveyors
29 Identify port.
30 Identify tank(s), substance(s), Category(ies) discharged ashore.
31 Have tank(s), pump(s), and piping system(s) been emptied?
32 Has a prewash in accordance with the ship’s Procedures and Arrangements Manual been carried out?
33 Have tank washings resulting from the prewash been discharged ashore and is the tank empty?
34 An exemption has been granted from mandatory prewash.
35 Reasons for exemption.
36 Name and signature of authorized surveyor.
37 Organization, company, government agency for which surveyor works.
(K) Additional operational procedures and remarks
Name of ship………………………………………………………………………………….
Distinctive number or letters……….………………………………………………………
IMO Number…………………………………………………………………………………..
CARGO/BALLAST OPERATIONS
| Date | Code(letter) | Item(number) | Record of operations/signature of officer incharge/name of and signature of authorizedsurveyor |
Signature of master………………………………………………
Appendix 3
INTERNATIONAL POLLUTION PREVENTION CERTIFICATE FOR
THE CARRIAGE OF NOXIOUS LIQUID SUBSTANCES IN BULK
Appendix 4
Note 1: The format consists of a standardized introduction and index of the leading paragraphs to each section. This standardized part shall be reproduced in the Manual of each ship. It shall be followed by the contents of each section as prepared for the particular ship. When a section is not applicable, “NA” shall be entered, so as not to lead to any disruption of the numbering as required by the standard format. Where the paragraphs of the standard format are printed in italics, the required information shall be described for that particular ship. The contents will vary from ship to ship because of design, trade and intended cargoes. Where the text is not in italics, that text of the standard format shall be copied into the Manual without any modification.
Note 2: If the Administration requires or accepts information and operational instructions in addition to those outlined in this Standard For
mat, they shall be included in Addendum D of the Manual.
STANDARD FORMAT
MARPOL 73/78 ANNEX II PROCEDURES AND ARRANGEMENTS MANUAL
Name of ship: ………………………………………………………………………………
Distinctive number or letters: ……………………………………………………………
IMO Number……………………………………………………………………………….
Port of registry: ……………………………………………………………………………
Approval stamp of Administration:
INTRODUCTION
1 The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (hereinafter referred to as MARPOL 73/78) was established in order to prevent the pollution of the marine environment by discharges into the sea from ships of harmful substances or effluents containing such substances. In order to achieve its aim, MARPOL 73/78 contains six Annexes in which detailed regulations are given with respect to the handling on board ships and the discharge into the sea or release into the atmosphere of six main groups of harmful substances, i.e. Annex I (Mineral oils), Annex II (Noxious Liquid Substances carried in bulk), Annex III (Harmful substances carried in packaged forms), Annex IV (Sewage), Annex V (Garbage) and Annex VI (Air Pollution).
2 Regulation 13 of Annex II of MARPOL 73/78 (hereinafter referred to as Annex II) prohibits the discharge into the sea of Noxious Liquid Substances of Categories X, Y or Z or of ballast water, tank washings or other residues or mixtures containing such substances, except in compliance with specified conditions including procedures and arrangements based upon standards developed by the International Maritime Organization (IMO) to ensure that the criteria specified for each Category will be met.
3 Annex II requires that each ship which is certified for the carriage of Noxious Liquid Substances in bulk shall be provided with a Procedures and Arrangements Manual, hereinafter referred to as the Manual.
4 This Manual has been written in accordance with Appendix 4 of Annex II and is concerned with the marine environmental aspects of the cleaning of cargo tanks and the discharge of residues and mixtures from these operations. The Manual is not a safety guide and reference shall be made to other publications specifically to evaluate safety hazards.
5 The purpose of the Manual is to identify the arrangements and equipment required to enable compliance with Annex II and to identify for the ship’s officers all operational procedures with respect to cargo handling, tank cleaning, slops handling, residue discharging, ballasting and deballasting, which must be followed in order to comply with the requirements of Annex II.
6 In addition, this Manual, together with the ship’s Cargo Record Book and the Certificate issued under Annex II* will be used by Administrations for control purposes in order to ensure full compliance with the requirements of Annex II by this ship.
7 The master shall ensure that no discharges into the sea of cargo residues or residue/water mixtures containing Category X, Y or Z substances shall take place, unless such discharges are made in full compliance with the operational procedures contained in this Manual.
8 This Manual has been approved by the Administration and no alteration or revision shall be made to any part of it without the prior approval of the Administration.
* Include only the Certificate issued to the particular ship: i.e. The International Pollution Prevention Certificate for the carriage of Noxious Liquid Substances in bulk or the Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk or the International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk.
INDEX OF SECTIONS
1 Main features of MARPOL 73/78, Annex II
2 Description of the ship’s equipment and arrangements
3 Cargo unloading procedures and tank stripping
4 Procedures relating to the cleaning of cargo tanks, the discharge of residues, ballasting and deballasting
5 Information and Procedures
SECTION 1 Main features of MARPOL 73/78, Annex II
1.1 The requirements of Annex II apply to all ships carrying Noxious Liquid Substances in bulk. Substances posing a threat of harm to the marine environment are divided into three categories, X, Y and Z. Category X substances are those posing the greatest threat to the marine environment, whilst Category Z substances are those posing the smallest threat.
1.2 Annex II prohibits the discharge into the sea of any effluent containing substances falling under these categories, except when the discharge is made under conditions which are specified in detail for each Category. These conditions include, where applicable, such parameters as:
.1 the maximum quantity of substances per tank which may be discharged into the sea;
.2 the speed of the ship during the discharge;
.3 the minimum distance from the nearest land during discharge;
.4 the minimum depth of water at sea during discharge; and
.5 the need to effect the discharge below the waterline.
1.3 For certain sea areas identified as “special area” more stringent discharge criteria apply. Under Annex II the special area is the Antarctic area.
1.4 Annex II requires that every ship is provided with pumping and piping arrangements to ensure that each tank designated for the carriage of Category X, Y and Z substances does not retain after unloading a quantity of residue in excess of the quantity given in the Annex. For each tank intended for the carriage of such substances an assessment of the residue quantity has to be made. Only when the residue quantity as assessed is less than the quantity prescribed by the Annex a tank may be approved for the carriage of a Category X, Y or Z substances.
1.5 In addition to the conditions referred to above, an important requirement contained in Annex II is that the discharge operations of certain cargo residues and certain tank cleaning and ventilation operations may only be carried out in accordance with approved procedures and arrangements.
1.6 To enable the requirement of paragraph 1.5 to be met, this Manual contains in section 2 all particulars of the ship’s equipment and arrangements, in section 3 operational procedures for cargo unloading and tank stripping and in section 4 procedures for discharge of cargo residues, tank washing, slops collection, ballasting and deballasting as may be applicable to the substances the ship is certified to carry.
1.7 By following the pro
cedures as set out in this Manual, it will be ensured that the ship complies with all relevant requirements of Annex II to MARPOL 73/78.
SECTION 2 Description of the ship’s equipment and arrangements
2.1 This section contains all particulars of the ship’s equipment and arrangements necessary to enable the crew to follow the operational procedures set out in sections 3 and 4.
2.2 General arrangement of ship and description of cargo tanks
This section shall contain a brief description of the cargo area of the ship with the main features of the cargo tanks and their positions.
Line or schematic drawings showing the general arrangement of the ship and indicating the position and numbering of the cargo tanks and heating arrangements shall beincluded.
2.3 Description of cargo pumping and piping arrangements and stripping system
This section shall contain a description of the cargo pumping and piping arrangements and of the stripping system. Line or schematic drawings shall be provided showing the following and be supported by textual explanation where necessary:
.1 cargo piping arrangements with diameters;
.2 cargo pumping arrangements with pump capacities;
.3 piping arrangements of stripping system with diameters;
.4 pumping arrangements of stripping system with pump capacities;
.5 location of suction points of cargo lines and stripping lines inside every cargo tank;
.6 if a suction well is fitted, the location and cubic capacity thereof;
.7 line draining and stripping or blowing arrangements; and
.8 quantity and pressure of nitrogen or air required for line blowing if applicable.
2.4 Description of ballast tanks and ballast pumping and piping arrangements
This section shall contain a description of the ballast tanks and ballast pumping and piping arrangements.
Line or schematic drawings and tables shall be provided showing the following:
.1 a general arrangement showing the segregated ballast tanks and cargo tanks to be used as ballast tanks together with their capacities (cubic metres);
.2 ballast piping arrangement;
.3 pumping capacity for those cargo tanks which may also be used as ballast tanks; and
.4 any interconnection between the ballast piping arrangements and the underwater outlet system.
2.5 Description of dedicated slop tanks with associated pumping and piping arrangements
This section shall contain a description of the dedicated slop tank(s), if any, with the associated pumping and piping arrangements. Line or schematic drawings shall be provided showing the following:
.1 which dedicated slop tanks are provided together with the capacities of such tanks;
.2 pumping and piping arrangements of dedicated slop tanks with piping diameters and their connection with the underwater discharge outlet.
2.6 Description of underwater discharge outlet for effluents containing Noxious Liquid Substances
This section shall contain information on position and maximum flow capacity of the underwater discharge outlet (or outlets) and the connections to this outlet from the cargo tanks and slop tanks. Line or schematic drawings shall be provided showing the following:
.1 location and number of underwater discharge outlets;
.2 connections to underwater discharge outlet;
.3 location of all seawater intakes in relation to underwater discharge outlets.
2.7 Description of flow rate indicating and recording devices
Deleted
2.8 Description of cargo tank ventilation system
This section shall contain a description of the cargo tank ventilation system.
Line or schematic drawings and tables shall be provided showing the following and supported by textual explanation if necessary:
.1 the Noxious Liquid Substances the ship is certified fit to carry having a vapour pressure over 5 kPa at 20°C suitable for cleaning by ventilation to be listed in paragraph 4.4.10 of the Manual;
.2 ventilation piping and fans;
.3 position of the ventilation openings;
.4 the minimum flow rate of the ventilation system to adequately ventilate the bottom and all parts of the cargo tank;
.5 the location of structures inside the tank affecting ventilation;
.6 the method of ventilating the cargo pipeline system, pumps, filters, etc; and
.7 means for ensuring that the tank is dry.
2.9 Description of tank washing arrangements and wash water heating system
This section shall contain a description of the cargo tank washing arrangements, wash water heating system and all necessary tank washing equipment.
Line or schematic drawings and tables or charts showing the following:
.1 arrangements of piping dedicated for tank washing with pipeline diameters;
.2 type of tank cleaning machines with capacities and pressure rating;
.3 maximum number of tank cleaning machines which can operate simultaneously;
.4 position of deck openings for cargo tank washing;
.5 the number of cleaning machines and their location required for ensuring complete coverage of the cargo tank walls;
.6 maximum capacity of wash water which can be heated to 60°C by the installed heating equipment; and
.7 maximum number of tank cleaning machines which can be operated simultaneously at 60°C.
SECTION 3 Cargo unloading procedures and tank stripping
3.1 This section contains operational procedures in respect of cargo unloading and tank stripping which must be followed in order to ensure compliance with the requirements of Annex II.
3.2 Cargo unloading
This section shall contain procedures to be followed including the pump and cargo unloading and suction line to be used for each tank. Alternative methods may be given.
The method of operation of the pump or pumps and the sequence of operation of all valves shall be given.
The basic requirement is to unload the cargo to the maximum extent.
3.3 Cargo tank stripping
This section shall contain procedures to be followed during the stripping of each cargo tank.
The procedures shall include the following:
.1 operation of stripping system;
.2 list and trim requirements;
.3 line draining and stripping or blowing arrangements if applicable; and
.4 duration of the stripping time of the water test.
3.4 Cargo temperature
This section shall contain information on the heating requirements of cargoes which have been identified as being required to be at a certain minimum temperature during unloading.
Information shall be given on control of the heating system and the method of temperature measurement.
3.5 Procedures to be followed when a cargo tank cannot be unloaded in accordance with the required procedures
This section shall contain information on the procedures to be followed in the event that the requirements contained in sections 3.3 and/or 3.4 cannot be met due to circumstances such as the following:
.1 failure of cargo tank stripping system; and
.2 failure of cargo tank heating system.
3.6 Cargo Record Book
The Cargo Record Book shall be completed in the appropriate places on completion of any cargo operation.
SECTION 4 Procedures relating to the cleaning of cargo tanks, the discharge of residues, ballasting and deballasting
4.1 This section contains operational procedures in respect of tank cleaning, ballast and slops handling which must be followed in order to ensure compliance with the requirements of Annex II.
4.2 The following paragraphs outline the sequence of actions to be taken and contain the information essential to ensure that Noxious Liquid Substances are discharged without posing a threat of harm to the marine environment.
4.3 Deleted
4.4 The information necessary to establish the procedures for discharging the residue of the cargo, cleaning, ballasting and deballasting the tank, shall take into account the following:
.1 Category of substance
The Category of the substance should be obtained from the relevant Certificate.
.2 Stripping efficiency of tank pumping system
The contents of this section will depend on the design of the ship and whether it is a new ship or existing ship (See flow diagram and pumping/stripping requirements).
.3 Vessel within or outside Special Area
This section shall contain instructions on whether the tank washings can be discharged into the sea within a special area (as defined in section 1.3) or outside a special area. The different requirements shall be made clear and will depend on the design and trade of the ship.
No discharges into the sea of residues of Noxious Liquid Substances, or mixtures containing such substances, are allowed within the Antarctic area (the sea area south of latitude 60°S).
.4 Solidifying or High-Viscosity Substance
The properties of the substance should be obtained from the shipping document.
.5 Miscibility with water
Deleted
.6 Compatibility with slops containing other substances
This section shall contain instructions on the permissible and non-permissible mixing of cargo slops. Reference should be made to compatibility guides.
.7 Discharge to reception facility
This section shall identify those substances the residues of which are required to be prewashed and discharged to a reception facility.
.8 Discharging into the sea
This section shall contain information on the factors to be considered in order to identify whether the residue/water mixtures are permitted to be discharged into the sea.
.9 Use of cleaning agents or additives
This section shall contain information on the use and disposal of cleaning agents (e.g. solvents used for tank cleaning) and additives* to tank washing water (e.g. detergents).
.10 Use of ventilation procedures for tank cleaning
This section shall make reference to all substances suitable for the use of ventilation procedures.
4.5 Having assessed the above information, the correct operational procedures to be followed should be identified using the instructions and flow diagram of section 5. Appropriate entries shall be made in the Cargo Record Book indicating the procedure adopted.
* See the latest edition of MEPC.2 circular (issued annually in December).
SECTION 5 Information and procedures
This section shall contain procedures, which will depend on the age of the ship and pumping efficiency. Examples of flow diagram referred to in this section are given at addendum A and incorporate comprehensive requirements applicable to both new and existing ships. The Manual for a particular ship shall only contain those requirements specifically applicable to that ship.
Information relating to melting point and viscosity, for those substances which have a melting point equal to or greater than 0°C or a viscosity equal or greater than 50 mPa.s at 20°C, shall be obtained from the shipping document.
For substances allowed to be carried, reference is made to the relevant Certificate.
The Manual shall contain:
| Table 1: | Deleted |
| Table 2: | Cargo tank information. |
| Addendum A: | Flow diagram. |
| Addendum B: | Prewash procedures. |
| Addendum C: | Ventilation procedures. |
| Addendum D: | Additional information and operational instructions when required or accepted by the Administration. |
Outlines of the above table and addenda are shown below.
Table 2 – Cargo tank information
| Tank no | Capacity(m3) | Strippingquanti ty(litres) |
ADDENDUM A
Note 1 : This flow diagram shows the basic requirements applicable to all age groups of ships and is for guidance only.
Note 2 : All discharges into the sea are regulated by Annex II.
Note 3 : Within the Antarctic area, any discharge into the sea of Noxious Liquid Substances or mixtures containing such substances is prohibited.
| Ship details | Stripping requirements (in litres) | ||
| Category X | Category Y | Category Z | |
| New Ships: keel laid after 01/01/2007 | 75 | 75 | 75 |
| IBC ships until 01/01/2007 | 100 +50tolerance | 100 + 50tolerance | 300 + 50 tolerance |
| BCH ships | 300 + 50tolerance | 300 + 50 tolerance | 900 + 50 tolerance |
| Other ships: keel-laid before01/01/2007 | N/A | N/A | Empty to the mostpossible extent |
| Cleaning and disposal procedures (CDP)(Start at the top of the column under the CDP number specified and complete each itemprocedure in the sequence where marked) | ||||||
| No. | Operation | Procedure Number | ||||
| 1(a) | 1(b) | 2(a) | 2(b) | 3 | ||
| 1 | Strip tank and piping to maximum extent, at least in compliance withthe procedures in section 3 of this Manual | X | X | X | X | X |
| 2 | Apply prewash in accordance with Addendum B of this Manual anddischarge residue to reception facility | X | X | |||
| 3 | Apply subsequent wash, additional to the prewash, with:
for ships built before 1 July 1994
for ships built on or after 1 July 1994 |
X | ||||
| 4 | Apply ventilation procedure in accordance with Addendum C of thisManual | X | ||||
| 5 | Ballast tanks or wash tank to commercial standards | X | X | X | X | |
| 6 | Ballast added to tank | X | ||||
| 7 | Conditions for discharge of ballast/residue/water mixtures other than prewash: | |||||
| .1 distance from land > 12 nautical miles | X | X | X | |||
| .2 ship’s speed > 7 knots | X | X | X | |||
| .3 water depth > 25 metres | X | X | X | |||
| .4 Using underwater discharge (not exceeding permissible discharge rate) | X | X | ||||
| 8 | Conditions for discharge of ballast: | |||||
| .1 distance from land > 12 nautical miles | X | |||||
| .2 water depth > 25 metres | X | |||||
| 9 | Any water subsequently introduced into a tank may be dischargedinto the sea without restrictions | X | X | X | X | X |
ADDENDUM B
This addendum to the Manual shall contain prewash procedures based on appendix 6 of Annex II. These procedures shall contain specific requirements for the use of the tank washing arrangements and equipment provided on the particular ship and include the following:
.1 cleaning machine positions to be used;
.2 slops pumping out procedure;
.3 requirements for hot washing;
.4 number of cycles of cleaning machine (or time); and
.5 minimum operating pressures.
ADDENDUM C
This addendum to the Manual shall contain ventilation procedures based on appendix 7 of Annex II. The procedures shall contain specific requirements for the use of the cargo tank ventilation system, or equipment, fitted on the particular ship and shall include the following:
.1 ventilation positions to be used;
.2 minimum flow or speed of fans;
.3 procedures for ventilating cargo pipeline, pumps, filters, etc.; and
.4 procedures for ensuring that tanks are dry on completion.
ADDENDUM D
Appendix 5
1 Introduction
1.1 Purpose
1.1.1 The purpose of this appendix is to provide the procedure for testing the efficiency of cargo pumping systems.
1.2 Background
1.2.1 The ability of the pumping system of a tank to comply with regulation 12.1, 12.2 or 12.3 is determined by performing a test in accordance with the procedure set out in section 3 of this appendix. The quantity measured is termed the “stripping quantity”. The stripping quantity of each tank shall be recorded in the ship’s Manual.
1.2.2 After having determined the stripping quantity of one tank, the Administration may use the determined quantities for a similar tank, provided the Administration is satisfied that the pumping system in that tank is similar and operating properly.
2 Design criteria and performance test
2.1 The cargo pumping systems should be designed to meet the required maximum amount of residue per tank and associated piping as specified in regulation 12 of Annex II to the satisfaction of the Administration.
2.2 In accordance with regulation 12.5 the cargo pumping systems shall be tested with water to prove their performance. Such water tests shall, by measurement, show that the system meets the requirements of regulation 12. In respect of regulations 12.1 and 12.2 a tolerance of 50 litres per tank is acceptable.
3 Water performance test
3.1 Test condition
3.1.1 The ship’s trim and list shall be such as to provide favourable drainage to the suction point. During the water test the ship’s trim shall not exceed 3° by the stern, and the ship’s list shall not exceed 1°.
3.1.2 The trim and list chosen for the water test shall be recorded. This shall be the minimum favourable trim and list used during the water test.
3.1.3 During the water test means shall be provided to maintain a back-pressure of not less than 100 kPa at the cargo tank’s unloading manifold (see figures 5-1 and 5-2).
3.1.4 The time taken to complete the water test shall be recorded for each tank, recognizing that this may need to be amended as a result of subsequent tests.
3.2 Test procedure
3.2.1 Ensure that the cargo tank to be tested and its associated piping have been cleaned and that the cargo tank is safe for entry.
3.2.2 Fill the cargo tank with water to a depth necessary to carry out norma
l end of unloading procedures.
3.2.3 Discharge and strip water from the cargo tank and its associated piping in accordance with the proposed procedures.
3.2.4 Collect all water remaining in the cargo tank and its associated piping into a calibrated container for measurement. Water residues shall be collected, inter alia, from the following points:
.1 the cargo tank suction and its vicinity;
.2 any entrapped areas on the cargo tank bottom;
.3 the low point drain of the cargo pump; and
.4 all low point drains of piping associated with the cargo tank up to the manifold valve.
3.2.5 The total water volumes collected above determine the stripping quantity for the cargo tank.
3.2.6 Where a group of tanks is served by a common pump or piping, the water test residues associated with the common system(s) may be apportioned equally among the tanks provided that the following operational restriction is included in the ship’s approved Manual: “For sequential unloading of tanks in this group, the pump or piping is not to be washed until all tanks in the group have been unloaded.”
The above figures illustrate test arrangements that would provide a backpressure of not less than 100 kPa at the cargo tank’s unloading manifold.
Appendix 6
A For ships built before 1 July 1994
A prewash procedure is required in order to meet certain Annex II requirements. This appendix explains how these prewash procedures shall be performed.
Prewash procedures for non-Solidifying Substances
1 Tanks shall be washed by means of a rotary water jet, operated at sufficiently high water pressure. In the case of Category X substances cleaning machines shall be operated in such locations that all tank surfaces are washed. In the case of Category Y substances only one location need be used.
2 During washing the amount of water in the tank shall be minimized by continuously pumping out slops and promoting flow to the suction point (positive list and trim). If this condition cannot be met the washing procedure shall be repeated three times, with thorough stripping of the tank between washings.
3 Those substances which have a viscosity equal to or greater than 50 mPa.s at 20°C shall be washed with hot water (temperature at least 60°C), unless the properties of such substances make the washing less effective.
4 The number of cycles of the cleaning machine used shall not be less than that specified in table 6-1. A cleaning machine cycle is defined as the period between two consecutive identical orientations of the tank cleaning machine (rotation through 360°).
5 After washing, the tank cleaning machine(s) shall be kept operating long enough to flush the pipeline, pump and filter, and discharge to shore reception facilities shall be continued until the tank is empty.
Prewash procedures for Solidifying Substances
1 Tanks shall be washed as soon as possible after unloading. If possible tanks shall be heated prior to washing.
2 Residues in hatches and manholes shall preferably be removed prior to the prewash.
3 Tanks shall be washed by means of a rotary water jet operated at sufficiently high water pressure and in locations to ensure that all tank surfaces are washed.
4 During washing the amount of water in the tank shall be minimized by pumping out slops continuously and promoting flow to the suction point (positive list and trim). If this condition cannot be met, the washing procedure shall be repeated three times with thorough stripping of the tank between washings.
5 Tanks shall be washed with hot water (temperature at least 60°C) unless the properties of such substances make the washing less effective.
6 The number of cycles of the cleaning machine used shall not be less than that specified in table 6-1. A cleaning machine cycle is defined as the period between two consecutive identical orientations of the machine (rotation through 360°).
7 After washing, the cleaning machine(s) shall be kept operating long enough to flush the pipeline, pump and filter,and discharge to shore reception facilities shall be continues until the tank is empty.
Table 6-1 — Number of cleaning machine cycles to be used in each location
| Category of substance | Number of cleaning machine cycles | |
| Non-SolidifyingSubstances | SolidifyingSubstances | |
| Category X | 1 | 2 |
| Category Y | 1/2 | 1 |
B For ships built on or after 1 July 1994 and recommendatory for ships built before 1 July 1994
A prewash procedure is required in order to meet certain Annex II requirements. This appendix explains how these prewash procedures shall be performed and how the minimum volumes of washing media to be used shall be determined. Smaller volumes of washing media may be used based on actual verification testing to the satisfaction of the Administration. Where reduced volumes are approved an entry to that effect must be recorded in the Manual.
If a medium other than water is used for the prewash, the provisions regulation 13.5.1 apply.
Prewash procedures for non-Solidifying Substances without recycling
1 Tanks shall be washed by means of a rotary jet(s), operated at sufficiently high water pressure. In the case of Category X substances cleaning machines shall be operated in such locations that all tank surfaces are washed. In the case of Category Y substances only one location need be used.
2 During washing the amount of liquid in the tank shall be minimized by continuously pumping out slops and promoting flow to the suction point. If this condition cannot be met, the washing procedure shall be repeated three times, with thorough stripping of the tank between washings.
3 Those substances which have a viscosity equal to or greater than 50 mPa.s at 20°C shall be washed with hot water (temperature at least 60°C), unless the properties of such substances make the washing less effective.
4 The quantities of wash water used shall not be less than tho
se specified in paragraph 20 or determined according to paragraph 21.
5 After prewashing the tanks and lines shall be thoroughly stripped.
Prewash procedures for Solidifying Substances without recycling
6 Tanks shall be washed as soon as possible after unloading. If possible, tanks should be heated prior to washing.
7 Residues in hatches and manholes should preferably be removed prior to the prewash.
8 Tanks shall be washed by means of a rotary jet(s) operated at sufficiently high water pressure and in locations to ensure that all tank surfaces are washed.
9 During washing the amount of liquid in the tank shall be minimized by pumping out slops continuously and promoting flow to the suction point. If this condition cannot be met, the washing procedure shall be repeated three times with thorough stripping of the tankbetween washings.
10 Tanks shall be washed with hot water (temperature at least 60°C), unless the properties of such substances make the washing less effective.
11 The quantities of wash water used shall not be less than those specified in paragraph 20 or determined according to paragraph 21.
12 After prewashing the tanks and lines shall be thoroughly stripped.
Prewash procedures with recycling of washing medium
13 Washing with a recycled washing medium may be adopted for the purpose of washing more than one cargo tank. In determining the quantity, due regard must be given to the expected amount of residues in the tanks and the properties of the washing medium and whether any initial rinse or flushing is employed. Unless sufficient data are provided, the calculated end concentration of cargo residues in the washing medium shall not exceed 5% based on nominal stripping quantities.
14 The recycled washing medium shall only be used for washing tanks having contained the same or similar substance.
15 A quantity of washing medium sufficient to allow continuous washing shall be added to the tank or tanks to be washed.
16 All tank surfaces shall be washed by means of a rotary jet(s) operated at sufficiently high pressure. The recycling of the washing medium may either be within the tank to be washed or via another tank, e.g. a slop tank.
17 The washing shall be continued until the accumulated throughput is not less than that corresponding to the relevant quantities given in paragraph 20 or determined according to paragraph 21.
18 Solidifying Substances and substances with viscosity equal to or greater than 50 mPa.s at 20°C shall be washed with hot water (temperature at least 60°C) when water is used as the washing medium, unless the properties of such substances make the washing less effective.
19 After completing the tank washing with recycling to the extent specified in paragraph 17, the washing medium shall be discharged and the tank thoroughly stripped. Thereafter, the tank shall be subjected to a rinse, using clean washing medium, with continuous drainage and discharged to a reception facility. The rinse shall as a minimum cover the tank bottom and be sufficient to flush the pipelines, pump and filter.
Minimum quantity of water to be used in a prewash
20 The minimum quantity of water to be used in a prewash is determined by the residual quantity of noxious liquid substance in the tank, the tank size, the cargo properties, the permitted concentration in any subsequent wash water effluent, and the area of operation. The minimumquantity is given by the following formula:
Q=k(15r0.8 + 5r0.7 x V/1000)
where
Q = the required minimum quantity in m3
R = the residual quantity per tank in m3. The value of r shall be the value demonstrated in the actual stripping efficiency test, but shall not be taken lower than 0.100 m3 for a tank volume of 500 m3 and above and 0.040 m3 for a tank volume of 100 m3 and below. For tank sizes between 100 m3 and 500 m3 the minimum value of r allowed to be used in the calculations is obtained by linear interpolation.
For Category X substances the value of r shall either be determined based on stripping tests according to the Manual, observing the lower limits as given above, or be taken to be 0.9 m3.
V =tank volume in m3
k = a factor having values as follows:
Category X, non-Solidifying, Low-Viscosity Substance, k = 1.2
Category X, Solidifying or High-Viscosity Substance, k = 2.4
Category Y, non-Solidifying, Low-Viscosity Substance k = 0.5
Category Y, Solidifying or High-Viscosity Substance k = 1.0
The table below is calculated using the formula with a k factor of 1 and may be used as an easy reference.
| Stripping quantity(m3) | Tank volume (m3) | ||
| 100 | 500 | 3000 | |
| ≤0.04 | 1.2 | 2.9 | 5.4 |
| .10 | 2.5 | 2.9 | 5.4 |
| .30 | 5.9 | 6.8 | 12.2 |
| .90 | 14.3 | 16.1 | 27.7 |
21 Verification testing for approval of prewash volumes lower than those given in paragraph 20 may be carried out to the satisfaction of the Administration to prove that the requirements of regulation 13 are met, taking into account the substances the ship is certified to carry. The prewash volume so verified shall be adjusted for other prewash conditions by application of the factor k as defined in paragraph 20.
Appendix 7
1 Cargo residues of substances with a vapour pressure greater than 5 KPa at 20°C may be removed from a cargo tank by ventilation.
2 Before residues of Noxious Liquid Substances are ventilated from a tank the safety hazards relating to cargo flammability and toxicity shall be considered. With regard to safety aspects, the operational requirements for
openings in cargo tanks in SOLAS 74, as amended, the International Bulk Chemical Code, the Bulk Chemical Code, and the ventilation procedures in the International Chamber of Shipping (ICS) Tanker Safety Guide (Chemicals) should be consulted.
3 Port authorities may also have regulations on cargo tank ventilation.
4 The procedures for ventilation of cargo residues from a tank are as follows:
.1 the pipelines shall be drained and further cleared of liquid by means of ventilation equipment;
.2 the list and trim shall be adjusted to the minimum levels possible so that evaporation of residues in the tank is enhanced;
.3 ventilation equipment producing an airjet which can reach the tank bottom shall be used. Figure 7-1 could be used to evaluate the adequacy of ventilation equipment used for ventilating a tank of a given depth;
.4 ventilation equipment shall be placed in the tank opening closest to the tank sump or suction point;
.5 ventilation equipment shall, when practicable, be positioned so that the airjet is directed at the tank sump or suction point and impingement of the airjet on tank structural members is to be avoided as much as possible; and
.6 ventilation shall continue until no visible remains of liquid can be observed in the tank. This shall be verified by a visual examination or an equivalent method.
Figure 7-1. Minimum flow rate as a function of jet penetration depth.
Jet penetration depth shall be compared against tank height.
Annex III OF MARPOL 73/78
Regulation 1. Application
1 Unless expressly provided otherwise, the regulations of this Annex apply to all ships carrying harmful substances in packaged form.
1.1 For the purposes of this Annex, “harmful substances” are those substances which are identified as marine pollutants in the International Maritime Dangerous Goods (IMDG) Code.*
1.2 Guidelines for the identification of harmful substances in packaged form are given in the appendix to this Annex.
1.3 For the purposes of this Annex, “packaged form” is defined as the forms of containment specified for harmful substances in the IMDG Code.
2 The carriage of harmful substances is prohibited, except in accordance with the provisions of this Annex.
3 To supplement the provisions of this Annex, the Government of each Party to the Convention shall issue, or cause to be issued, detailed requirements on packing, marking, labelling, documentation, stowage, quantity limitations and exceptions for preventing or minimizing pollution of the marine environment by harmful substances.*
3 For the purposes of this Annex, empty packagings which have been used previously for the carriage of harmful substances shall themselves be treated as harmful substances unless adequate precautions have been taken to ensure that they contain no residue that is harmful to the marine environment.
4 The requirements of this Annex do not apply to ships’ stores and equipment.
* Refer to International Maritime Dangerous Goods (IMDG) Code adopted by the Organization by resolution A.716(17), as it has been or may be amended by the Maritime Safety Committee.
Regulation 2. Packing
Packages shall be adequate to minimize the hazard to the marine environment, having regard to their specific contents.
Regulation 3. Marking and labelling
1 Packages containing a harmful substance shall be durably marked with the correct technical name (trade names alone shall not be used) and, further, shall be durably marked or labelled to indicate that the substance is a marine pollutant. Such identification shall be supplemented where possible by any other means, for example, by use of the relevant United Nations number.
2 The method of marking the correct technical name and of affixing labels on packages containing a harmful substance shall be such that this information will still be identifiable on packages surviving at least three months’ immersion in the sea. In considering suitable marking and labelling, account shall be taken of the durability of the materials used and of the surface of the package.
3 Packages containing small quantities of harmful substances may be exempted from the marking requirements.**
** Refer to the specific exemptions provided for in the IMDG Code.
Regulation 4. Documentation***
1 In all documents relating to the carriage of harmful substances by sea where such substances are named, the correct technical name of each such substance shall be used (trade names alone shall not be used) and the substance further identified by the addition of the words “MARINE POLLUTANT”.
2 The shipping documents supplied by the shipper shall include, or be accompanied by, a signed certificate or declaration that the shipment offered for carriage is properly packaged and marked, labelled or placarded as appropriate and in proper condition for carriage to minimize the hazard to the marine environment.
3 Each ship carrying harmful substances shall have a special list or manifest setting forth the harmful substances on board and the location thereof. A detailed stowage plan which sets out the location of the harmful substances on board may be used in place of such special list or manifest. Copies of such documents shall also be retained on shore by the owner of the ship or his representative until the harmful substances are unloaded. A copy of one of these documents shall be made available before departure to the person or organization designated by the port State authority.
4 When the ship carries a special list or manifest or a detailed stowage plan, required for the carriage of dangerous goods by the International Convention for the Safety of Life at Sea, 1974, as amended, the documents required by this regulation may be combined with those for dangerous goods. Where documents are combined, a clear distinction shall be made between dangerous goods and harmful substances covered by this Annex.
*** Reference to “documents” in this regulation does not preclude the use of electronic data processing (EDP) and electronic data interchange (EDI) transmission techniques as an aid to paper documentation.
Regulation 5. Stowage
Harmful substances shall be properly stowed and secured so as to minimize the hazards to the marine environment without impairing the safety of the ship and persons on board.
Regulation 6. Quantity limitati
ons
Certain harmful substances may, for sound scientific and technical reasons, need to be prohibited for carriage or be limited as to the quantity which may be carried aboard any one ship. In limiting the quantity, due consideration shall be given to size, construction and equipment of the ship, as well as the packaging and the inherent nature of the substances.
Regulation 7. Exceptions
1 Jettisoning of harmful substances carried in packaged form shall be prohibited, except where necessary for the purpose of securing the safety of the ship or saving life at sea.
2 Subject to the provisions of the present Convention, appropriate measures based on the physical, chemical and biological properties of harmful substances shall be taken to regulate the washing of leakages overboard, provided that compliance with such measures would not impair the safety of the ship and persons on board.
Regulation 8. Port State control on operational requirements*
1 A ship when in a port of another Party is subject to inspection by officers duly authorized by such Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of pollution by harmful substances.
2 In the circumstances given in paragraph (1) of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation has been brought to order in accordance with the requirements of this Annex.
3 Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
4 Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
* Refer to the Procedures for port State control adopted by the Organization by resolution A.(787) and amended by A.882(21).
Appendix to Annex III
For the purposes of this Annex, substances identified by any one of the following criteria are harmful substances:
– bioaccumulated to a significant extent and known to produce a hazard to aquatic life or to human health (Hazard Rating “+” in column A**); or
– bioaccumulated with attendant risk to aquatic organisms or to human health with a short retention of the order of one week or less (Hazard Rating “Z” in column A**); or
– highly toxic to aquatic life, defined by a LC50/96 hour* less than 1 ppm (Hazard Rating”4″ in column B**).
** Refer to the Composite List of Hazard Profiles prepared by the IMO/FAO/UNESCO/WMO/WHO/IAEA/UN/UNEP Joint Group of Experts on the Scientific Aspects of Marine Pollution (GESAMP), which is circulated annually by the Organization by means of BLG circulars to all IMO Member States.
* The concentration of substance which will, within the specified time (generally 96 hours), kill 50% of the exposed group of test organisms. Also referred to as “96 h LC50“. LC50 is often specified in milligrams per litre (MG/l) or per million (ppm).
Annex IV
Chapter 1 General
Regulation 1
Definitions
For the purposes of this Annex:
1 “New ship” means a ship:
.1 for which the building contract is placed, or in the absence of a building contract, the keel of which is laid, or which is at a similar stage of construction, on or after the date of entry into force of this Annex; or
.2 the delivery of which is three years or more after the date of entry into force of this Annex.
2 “Existing ship” means a ship which is not a new ship.
3 “Sewage” means:
.1 drainage and other wastes from any form of toilets and urinals;
.2 drainage from medical premises (dispensary, sick bay, etc.) via wash basins, wash tubs and scuppers located in such premises;
.3 drainage from spaces containing living animals; or
.4 other waste waters when mixed with the drainages defined above.
4 “Holding tank” means a tank used for the collection and storage of sewage.
5 “Nearest Land”. The term “from the nearest land” means from the baseline from which the territorial sea of the territory in question is established in accordance with international law except that, for the purposes of the present Convention “from the nearest land” off the north eastern coast of Australia shall mean from a line drawn from a point on the coast of Australia in:
latitude 11°00′ S, longitude 142°08′ E
to a point in latitude 10°35′ S, longitude 141°55′ E
thence to a point latitude 10°00′ S, longitude 142°00′ E
thence to a point latitude 9°10′ S, longitude 143°52′ E
thence to a point latitude 9°00′ S, longitude 144°30′ E
thence to a point latitude 10°41′ S, longitude 145°00′ E
thence to a point latitude 13°00′ S, longitude 145°00′ E
thence to a point latitude 15°00′ S, longitude 146°00′ E
thence to a point latitude 17°30′ S, longitude 147°00′ E
thence to a point latitude 21°00′ S, longitude 152°55′ E
thence to a point latitude 24°30′ S, longitude 154°00′ E
thence to a point on the coast of Australia
in latitude 24°42′ S, longitude 153°15′ E
6 “International voyage” means a voyage from a country to which the present Convention applies to a port outside such country, or conversely.
7 “Person” means member of the crew and passengers.
8 “Anniversary date” means the day and the month of each year which will correspond to the date of expiry of the International Sewage Pollution Prevention Certificate.
Regulation 2
Application
1 The provisions of this Annex shall apply to the following ships engaged in international voyages:
.1 new ships of 400 gross tonnage and above; and
.2 new ships of less than 400 gross tonnage which are certified to carry more than 15 persons; and
.3 existing ships of 400 gross tonnage and above, five years after the date of entry into force of this Annex; and
.4 existing ships of less than 400 gross tonnage which are certified to carry more than 15 persons, five years after the date of entry into force of this Annex.
2 The Administration shall ensure that existing ships, according to subparagraphs 1.3 and 1.4 of this regulation, the keels of which are laid or which are of a similar stage of construction before 2 October 1983 shall be equipped, as far as practicable, to discharge sewage in accordance with the requirements of regulation 11 of the Annex.
Regulation 3
Exceptions
1 Regulation 11 of this Annex shall not apply to:
.1 the discharge of sewage from a ship necessary for the purpose of securing the safety of a ship and those on board or saving life at sea; or
.2 the discharge of sewage resulting from damage to a ship or its equipment if all reasonable precautions have been taken before and after the occurrence of the damage, for the purpose of preventing or minimizing the discharge.
Chapter 2 Surveys and certification
Regulation 4
Surveys
1 Every ship which, in accordance with regulation 2, is required to comply with the provisions of this Annex shall be subject to the surveys specified below:
.1 An initial survey before the ship is put in service or before the Certificate required under regulation 5 of this Annex is issued for the first time, which shall include a complete survey of its structure, equipment, systems, fittings, arrangements and material in so far as the ship is covered by this Annex. This survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with the applicable requirements of this Annex.
.2 A renewal survey at intervals specified by the Administration, but not exceeding five years, except where regulation 8.2, 8.5, 8.6 or 8.7 of this Annex is applicable. The renewal survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with applicable requirements of this Annex.
.3 An additional survey either general or partial, according to the circumstances, shall be made after a repair resulting from investigations prescribed in paragraph 4 of this regulation, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory and that the ship complies in all respects with the requirements of this Annex.
2 The Administration shall establish appropriate measures for ships which are not subject to the provisions of paragraph 1 of this regulation in order to ensure that the applicable provisions of this Annex are complied with.
3 Surveys of ships as regards the enforcement of the provisions of this Annex shall be carried out by officers of the Administration. The Administration may, however, entrust the surveys either to surveyors nominated for the purpose or to organizations recognized by it.
4 An Administration nominating surveyors or recognizing organizations to conduct surveys as set forth in paragraph 3 of this regulation shall, as a minimum, empower any nominated surveyor or recognized organization to:
.1 require repairs to a ship; and
.2 carry out surveys if requested by the appropriate authorities of a Port State.
The Administration shall notify the Organization of the specific responsibilities and conditions of the authority delegated to the nominated surveyors or recognized organizations, for circulation to Parties to the present Convention for the information of their officers.
5 When a nominated surveyor or recognized organization determines that the condition of the ship or its equipment does not correspond substantially with the particulars of the Certificate or is such that the ship is not fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment, such surveyor or organization shall immediately ensure that corrective action is taken and shall in due course notify the Administration. If such corrective action is not taken the Certificate should be withdrawn and the Administration shall be notified immediately and if the ship is in a port of another Party, the appropriate authorities of the Port State shall also be notified immediately. When an officer of the Administration, a nominated surveyor or recognized organization has notified the appropriate authorities of the Port State, the Government of the Port State concerned shall give such officer, surveyor or organization any necessary assistance to carry out their obligations under this regulation. When applicable, the Government of the Port State concerned shall take such steps as will ensure that the ship shall not sail until it can proceed to sea or leave the port for the purpose of proceeding to the nearest appropriate repair yard available without presenting an unreasonable threat of harm to the marine environment.
6 In every case, the Administration concerned shall fully guarantee the completeness and efficiency of the survey and shall undertake to ensure the necessary arrangements to satisfy this obligation.
7 The condition of the ship and its equipment shall be maintained to conform with the provisions of the present Convention to ensure that the ship in all respects will remain fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment.
8 After any survey of the ship under paragraph 1 of this regulation has been completed, no change shall be made in the structure, equipment, systems, fittings, arrangements or material covered by the survey, without the sanction of the Administration, except the direct replacement of such equipment and fittings.
9 Whenever an accident occurs to a ship or a defect is discovered which substantially affects the integrity of the ship or the efficiency or completeness of its equipment covered by this Annex the master or owner of the ship shall report at the earliest opportunity to the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate, who shall cause investigations to be initiated to determine whether a survey as required by paragraph 1 of this regulation is necessary. If the ship is in a port of another Party, the master or owner shall also report immediately to the appropriate authorities of the Port State and the nominated surveyor or recognized organization shall ascertain that such report has been made.
Regulation 5
Issue or Endorsement of Certificate
1 An international Sewage Pollution Prevention Certificate shall be issued, after an initial or renewal survey in accordance with the provisions of regulation 4 of this Annex to any ship which is engaged in voyages to ports or offshore terminals under the jurisdict
ion of other Parties to the Convention. In the case of existing ships this requirement shall apply five years after the date of entry into force of this Annex.
2 Such Certificate shall be issued or endorsed either by the Administration or by any persons or organization* duly authorized by it. In every case the Administration assumes full responsibility for the Certificate.
* Refer to the Guidelines for the authorization of organizations acting on behalf of the Administrations, adopted by the Organization by resolution A.739(18), and the Specifications on the survey and certification functions of recognized organizations acting on behalf of the Administration, adopted by the Organization by resolution A.789(19).
Regulation 6
Issue or Endorsement of a Certificate by another Government
1 The Government of a Party to the Convention may, at the request of the Administration, cause a ship to be surveyed and, if satisfied that the provisions of this Annex are complied with, shall issue or authorize the issue of an International Sewage Pollution Prevention Certificate to the ship, and where appropriate, endorse or authorize the endorsement of that Certificate on the ship in accordance with this Annex.
2 A copy of the Certificate and a copy of the Survey report shall be transmitted as soon as possible to the Administration requesting the survey.
3 A Certificate so issued shall contain a statement to the effect that it has been issued at the request of the Administration and it shall have the same force and receive the same recognition as the Certificate issued under regulation 5 of this Annex.
4 No International Sewage Pollution Prevention Certificate shall be issued to a ship which is entitled to fly the flag of a State, which is not a Party.
Regulation 7
Form of Certificate
The International Sewage Pollution Prevention Certificate shall be drawn up in the form corresponding to the model given in the Appendix to this Annex and shall be at least in English, French or Spanish. If an official language of the issuing country is also used, this shall prevail in case of a dispute or discrepancy.
Regulation 8
Duration and validity of Certificate
1 An International Sewage Pollution Prevention Certificate shall be issued for a period specified by the Administration which shall not exceed five years.
2.1 Notwithstanding the requirements of paragraph 1 of this regulation, when the renewal survey is completed within three months before the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing Certificate.
2.2 When the renewal survey is completed after the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing Certificate.
2.3 When the renewal survey is completed more than three months before the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of completion of the renewal survey.
3 If a Certificate is issued for a period of less than five years, the Administration ma extend the validity of the Certificate beyond the expiry date to the maximum period specified in paragraph 1 of this regulation.
4 If a renewal survey has been completed and a new Certificate cannot be issued or placed on board the ship before the expiry date of the existing Certificate, the person or organization authorized by the Administration may endorse the existing Certificate and such a Certificate shall be accepted as valid for a further period which shall not exceed five months from the expiry date.
5 If a ship at the time when a Certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the Certificate but this extension shall be granted only for the purpose of allowing the ship to complete its voyage to the port in which it is to be surveyed and then only in cases where it appears proper and reasonable to do so. No Certificate shall be extended for a period longer than three months, and a ship to which an extension is granted shall not, on its arrival in the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port without having a new Certificate. When the renewal survey is completed, the new Certificate shall be valid to a date not exceeding five years from the date of expiry of the existing Certificate before the extension was granted.
6 A Certificate issued to a ship engaged on short voyages which has not been extended under the foregoing provisions of this regulation may be extended by the Administration for a period of grace of up to one month from the date of expiry stated on it. When the renewal survey is completed, the new Certificate shall be valid to a date not exceeding five years from the date of expiry of the existing Certificate before the extension was granted.
7 In special circumstances, as determined by the Administration, a new Certificate need not be dated from the date of expiry of the existing Certificate as required by paragraph 2.2, 5 or 6 of this regulation. In these special circumstances, the new Certificate shall be valid to a date not exceeding five years from the date of completion of the renewal survey.
8 A Certificate issued under regulation 5 or 6 of this Annex shall cease to be valid in either of the following cases:
.1 if the relevant surveys are not completed within the periods specified under regulation 4.1 of this Annex; or
.2 upon transfer of the ship to the flag of another State. A new Certificate shall only be issued when the Government issuing the new Certificate is fully satisfied that the ship is in compliance with the requirements of regulations 4.7 and 4.8 of this Annex. In the case of a transfer between Parties, if requested within 3 months after the transfer has taken place, the Government of the Party whose flag the ship was formerly entitled to fly shall, as soon as possible, transmit to the Administration copies of the Certificate carried by the ship before the transfer and, if available, copies of the relevant survey reports.
Chapter 3 Equipment and control of discharge
Regulation 9
Sewage Systems
1 Every ship which, in accordance with regulation 2, is required to comply with the provisions of this Annex shall be equipped with one of the following sewage systems:
.1 a sewage treatment plant which shall be of a type approved by the Administration, taking into account the standards and test methods developed by the Organization*, or
.2 a sewage comminuting and disinfecting system approved by the Administration. Such s
ystem shall be fitted with facilities to the satisfaction of the Administration, for the temporary storage of sewage when the ship is less than 3 nautical miles from the nearest land, or
.3 a holding tank of the capacity to the satisfaction of the Administration for the retention of all sewage, having regard to the operation of the ship, the number of persons on board and other relevant factors. The holding tank shall be constructed to the satisfaction of the Administration and shall have a means to indicate visually the amount of its contents.
* Refer to the Recommendation on International effluent standards and guidelines for performance tests for sewage treatment plants adopted by the Organization by resolution MEPC.2(VI). For existing ships national specifications are acceptable.
Regulation 10
Standard Discharge Connections
1 To enable pipes of reception facilities to be connected with the ship’s discharge pipeline, both lines shall be fitted with a standard discharge connection in accordance with the following table:
STANDARD DIMENSIONS OF FLANGES FOR DISCHARGE CONNECTIONS
| Description | Dimension |
| Outside diameter | 210 mm |
| Inner diameter | According to pipe outside diameter |
| Bolt circle diameter | 170 mm |
| Slots in flange | 4 holes 18 mm in diameter equidistantly placed on a bolt circle of the above diameter, slotted to the flange periphery. The slot width to be 18 mm |
| Flange thickness | 16 mm |
| Bolts and nuts: quantity and diameter | 4, each of 16 mm in diameter and of suitable length |
| The flange is designed to accept pipes up to a maximum internal diameter of 100 mm and shall be of steel or other equivalent material having a flat face. This flange, together with a suitable gasket, shall be suitable for a service pressure of 600 kPa. | |
For ships having a moulded depth of 5 metres and less, the inner diameter of the discharge connection may be 38 millimetres.
2 For ships in dedicated trades, i.e. passenger ferries, alternatively the ship’s discharge pipeline may be fitted with a discharge connection which can be accepted by the Administration, such as quick connection couplings.
Regulation 11
Discharge of Sewage
1 Subject to the provisions of regulation 3 of this Annex, the discharge of sewage into the sea is prohibited, except when:
.1 the ship is discharging comminuted and disinfected sewage using a system approved by the Administration in accordance with regulation 9.1.2 of this Annex at a distance of more than 3 nautical miles from the nearest land, or sewage which is not comminuted or disinfected at a distance of more than 12 nautical miles from the nearest land, provided that in any case, the sewage that has been stored in holding tanks shall not be discharged instantaneously but at a moderate rate when the ship is en route and proceeding at not less than 4 knots; the rate of discharge shall be approved by the Administration based upon standards developed by the Organization; or
.2 the ship has in operation an approved sewage treatment plant which has been certified by the Administration to meet the operational requirements referred to in regulation 9.1.1 of this Annex, and
.2.1 the test results of the plant are laid down in the ship’s International Sewage Pollution Prevention Certificate; and
.2.2 additionally, the effluent shall not produce visible floating solids nor cause discoloration of the surrounding water.
2 The provisions of paragraph 1 shall not apply to ships operating in the waters under the jurisdiction of a State and visiting ships from other States while they are in these waters and are discharging sewage in accordance with such less stringent requirements as may be imposed by such State.
3 When the sewage is mixed with wastes or waste water covered by other Annexes of MARPOL 73/78, the requirements of those Annexes shall be complied with in addition to the requirements of this Annex.
Chapter 4 Reception facilities
Regulation 12
Reception facilities
1 The Government of each Party to the Convention, which requires ships operating in waters under its jurisdiction and visiting ships while in its waters to comply with the requirements of regulation 11.1, undertakes to ensure the provision of facilities at ports and terminals of the reception of sewage, without causing delay to ships, adequate to meet the needs of the ships using them.
2 The Government of each Party shall notify the Organization for transmission to the Contracting Governments concerned of all cases where the facilities provided under this regulation are alleged to be inadequate.
Chapter 5 Port State Control
Regulation 13
Port State control on operational requirements *
1. A ship when in a port or an offshore terminal of another Party is subject to inspection by officers duly authorized by such Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of pollution by sewage.
2. In the circumstances given in paragraph (1) of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation has been brought to order in accordance with the requirements of this Annex.
3. Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
4. Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
* Refer to procedures for port State control adopted by the organization by resolution A.787(19) and amended by resolution A.882(21)
Appendix
Annex V OF MARPOL 73/78
Regulations 1. Definitions
For the purposes of this Annex:
(1) “Garbage” means all kinds of victual, domestic and operational waste excluding fresh fish and parts thereof, generated during the normal operation of the ship and liable to be disposed of continuously or periodically except those substances which are defined or listed in other Annexes to the present Convention.
(2) “Nearest land”. The term “from the nearest land” means from the baseline from which the territorial sea of the territory in question is established in accordance with international law except that, for the purposes of the present Convention “from the nearest land” off the north-eastern coast of Australia shall mean from a line drawn from a point on the coast of Australia in
latitude ll°00′ S, longitude 142°08′ E
to a point in latitude 10°35′ S, longitude 141°55′ E,
thence to a point latitude 10°00′ S, longitude 142°00′ E,
thence to a point latitude 09°10′ S, longitude 143°52′ E,
thence to a point latitude 09°00′ S, longitude 144°30′ E,
thence to a point latitude 10°41′ S, longitude 145°00′ E,
thence to a point latitude 13°00′ S, longitude 145°00′ E,
thence to a point latitude 15°00′ S, longitude 146°00′ E,
thence to a point latitude 17°30′ S, longitude 147°00′ E,
thence to a point latitude 21°00′ S, longitude 152°55′ E,
thence to a point latitude 24°30′ S, longitude 154°00′ E,
thence to a point on the coast of Australia in latitude 24°42′ S, longitude 153°15′ E.
(3) “Special area” means a sea area where for recognized technical reasons in relation to its oceanographical and ecological condition and to the particular character of its traffic the adoption of special mandatory methods for the prevention of sea pollution by garbage is required. Special areas shall include those listed in Regulation 5 of this Annex.
Regulation 2. Application
Unless expressly provided otherwise, the provisions of this Annex shall apply to all ships.
Regulation 3. Disposal of garbage outside special areas
(1) Subject to the provisions of Regulations 4, 5 and 6 of this Annex:
(a) the disposal into the sea of all plastics, including but not limited to synthetic ropes, synthetic fishing nets, plastic garbage bags and incinerator ashes from plastic products which may contain toxic or heavy metal residues is prohibited;
(b) the disposal into the sea of the following garbage shall be made as far as practicable from the nearest land but in any case is prohibited if the distance from the nearest land is less than:
(i) 25 nautical miles for dunnage, lining and packing materials which will float;
(ii) 12 nautical miles for food wastes and all other garbage including paper products, rags, glass, metal, bottles, crockery and similar refuse;
(c) disposal into the sea of garbage specified in sub-paragraph (b)(ii) of this Regulation may be permitted when it has passed through a comminuter or grinder and made as far as practicable from the nearest land but in any case is prohibited if the distance from the nearest land is less than 3 nautical miles. Such comminuted or ground garbage shall be capable of passing through a screen with openings no greater than 25 millimetres.
(2) When the garbage is mixed with other discharges having different disposal or discharge requirements the more stringent requirements shall apply.
Regulation 4. Special requirements for disposal of garbage
(1) Subject to the provisions of paragraph (2) of this Regulation, the disposal of any materials regulated by this Annex is prohibited from fixed or floating platforms engaged in the exploration, exploitation and associated off-shore processing of sea-bed mineral resources, and from all other ships when alongside or within 500 metres of such platforms.
(2) The disposal into the sea of food wastes may be permitted when they have been passed through a comminuter or grinder from such fixed or floating platforms located more than 12 nautical miles from land and all other ships when alongside or within 500 metres of such platforms. Such comminuted or ground food wastes shall be capable of passing through a screen with openings no greater than 25 millimetres.
Regulation 5. Disposal of garbage within special areas
(1) For the purposes of this Annex the special areas are the Mediterranean Sea area, the Baltic Sea area, the Black Sea area, the Red Sea area, the ‘Gulfs area’, the North Sea area, the Antarctic area and the Wider Caribbean Region, including the Gulf of Mexico and the Caribbean Sea, which are defined as follows:
(a) The Mediterranean Sea area means the Mediterranean Sea proper including the gulfs and seas therein with the boundary between the Mediterranean and the Black Sea constituted by the 41° N parallel and bounded to the west by the Straits of Gibraltar at the meridian of 5° 36′ W.
(b) The Baltic Sea area means the Baltic Sea proper with the Gulf of Bothnia and the Gulf of Finland and the entrance to the Baltic Sea bounded by the parallel of the Skaw in the Skagerrak at 57° 44.8′ N.
(c) The Black Sea area means the Black Sea proper with the boundary between the Mediterranean and the Black Sea constituted by the parallel 41° N.
(d) The Red Sea area means the Red Sea proper including the Gulfs of Suez and Aqaba bounded at the south by the rhumb line between Ras si Ane (12° 8.5′ N, 43° 19.6′ E) and Husn Murad (12° 40.4′ N, 43° 30.2′ E).
(e) The Gulfs area means the sea area located north west of the rhumb line between Ras al Hadd (22° 30′ N, 59° 48′ E) and Ras al Fasteh (25° 04′ N, 61° 25′ E).
(f) The North Sea area means the North Sea proper, including seas therein the boundary between:
(i) the North Sea southwards of latitude 62° N and eastwards of longitude 4°W;
(ii) the Skagerrak, the southern limit of which is determined east of the Skaw by latitude 57°44.8′ N; and
(iii) the English Channel and its approaches eastwards of longitude 5°W and northward of latitude 48°30’N.
(g) The Antarctic area means the sea area south of latitude 60°S.
(h) The Wider Caribbean Region, as defined in article 2, paragraph 1 of the Convention for the Protection and Development of t
he Marine Environment of the Wider Caribbean Region (Cartagena de Indias, 1983), means the Gulf of Mexico and Caribbean Sea proper including the bays and seas therein and that portion of the Atlantic Ocean within the boundary constituted by the 30°N parallel from Florida eastward to 77°30’W meridian, thence a rhumb line to the intersection of 20°N parallel and 59°W meridian, thence a rhumb line to the intersection of 7°20’N parallel and 50°W meridian, thence a rhumb line drawn southwesterly to the eastern boundary of French Guiana.
(2) Subject to the provisions of regulation 6 of this Annex:
(a) disposal into the sea of the following is prohibited:
(i) all plastics, including but not limited to synthetic ropes, synthetic fishing nets, plastic garbage bags and incinerator ashes from plastic products which may contain toxic or heavy metal residues; and
(ii) all other garbage, including paper products, rags, glass, metal, bottles, crockery, dunnage, lining and packing materials;
(b) except as provided in subparagraph (c) of this paragraph, disposal into the sea of food wastes shall be made as far as practicable from land, but in any case not less than 12 nautical miles from the nearest land,
(c) disposal into the Wider Caribbean Region of food wastes which have been passed through a comminuter or grinder shall be made as far as practicable from land, but in any case not subject to regulation 4 not less than 3 nautical miles from the nearest land. Such comminuted or ground food wastes shall be capable of passing through a screen with openings no greater than 25 millimetres.
(3) When the garbage is mixed with other discharges having different disposal or discharge requirements the more stringent requirements, shall apply.
(4) Reception facilities within special areas:
(a) The Government of each Party to the Convention, the coastline of which borders a special area undertakes to ensure that as soon as possible in all ports within a special area, adequate reception facilities are provided in accordance with regulation 7 of this Annex, taking into account the special needs of ships operating in these areas.
(b) The Government of each Party concerned shall notify the Organization of the measures taken pursuant to sub-paragraph (a) of this Regulation. Upon receipt of sufficient notifications the Organization shall establish a date from which the requirements of this regulation in respect of the area in question shall take effect. The Organization shall notify all Parties of the date so established no less than twelve months in advance of that date.
(c) After the date so established, ships calling also at ports in these special areas where such facilities are not yet available, shall fully comply with the requirements of this Regulation.
(5) Notwithstanding paragraph 4 of this regulation, the following rules apply to the Antarctic area:
(a) The Government of each Party to the Convention at whose ports ships depart en route to or arrive from the Antarctic area undertakes to ensure that as soon as practicable adequate facilities are provided for the reception of all garbage from all ships, without causing undue delay, and according to the needs of the ships using them.
(b) The Government of each Party to the Convention shall ensure that all ships entitled to fly its flag, before entering the Antarctic area, have sufficient capacity on board for the retention of all garbage while operating in the area and have concluded arrangements to discharge such garbage at a reception facility after leaving the area.
Regulation 6. Exceptions
Regulations 3, 4 and 5 of this Annex shall not apply to:
(a) the disposal of garbage from a ship necessary for the purpose of securing the safety of a ship and those on board or saving life at sea; or
(b) the escape of garbage resulting from damage to a ship or its equipment provided all reasonable precautions have been taken before and after the occurrence of the damage, for the purpose of preventing or minimizing the escape; or
(c) the accidental loss of synthetic fishing nets, provided that all reasonable precautions have been taken to prevent such loss.
Regulation 7. Reception facilities
(1) The Government of each Party to the Convention undertakes to ensure the provision of facilities at ports and terminals for the reception of garbage, without causing undue delay to ships, and according to the needs of the ships using them.
(2) The Government of each Party shall notify the Organization for transmission to the Parties concerned of all cases where the facilities provided under this Regulation are alleged to be inadequate.
Regulation 8. Port State control on operational requirements*
(1) A ship when in a port of another Party is subject to inspection by officers duly authorized by such Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of pollution by garbage.
(2) In the circumstances given in paragraph (1) of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation has been brought to order in accordance with requirements of this Annex.
(3) Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
(4) Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
* Refer to the Procedures for port State control adopted by the Organization by resolution A.787(19) and amended by A.882(21)
Regulation 9. Placards, garbage management plans and garbage record-keeping
(l)(a) Every ship of 12 metres or more in length overall shall display placards which notify the crew and passengers of the disposal requirements of regulations 3 and 5 of this Annex, as applicable.
(c) The placards shall be written in the working language of the ship’s personnel and, for ships engaged in voyages to ports or offshore terminals under the jurisdiction of other Parties to the Convention, shall also be in English, French or Spanish.
(2) Every ship of 400 tons gross tonnage and above, and every ship which is certified to carry 15 persons or more, shall carry a garbage management plan which the crew shall follow. This plan shall provide written procedures for collecting, storing, processing and disposing of garbage, including the use of the equipment on board. It shall also designate the person in charge of carrying out the plan. Such a plan shall be in accordance with the guidelines developed by the Organization* and written in the working language of the crew.
(3) Every ship of 400 tons gross tonnage and above and every ship which is certified to carry 15 persons or more engaged in voyages to ports or offshore terminals under the jurisdiction of other Parties to the Convention and every fixed and floating platform engaged in exploration and exploitation of the sea-bed shall be provided with a Garbage Record Book. The Garbage Record Book, whether as a part of the ship’s official log-book or otherwise, shall be in the form specified in the appendix to this Annex;
(a) each discharge operation, or completed incineration, shall be recorded in the Garbage Record Book and signed for on the date of the incineration or discharge by the officer in charge. Each completed page of the Garbage Record Book shall be signed by the master of the ship. The entries in the Garbage Record Book shall be at least in English, French or Spanish. Where the entries are also made in an official language of the State whose flag the ship is entitled to fly, these entries shall prevail in case of a dispute or discrepancy;
(b) the entry for each incineration or discharge shall include date and time, position of the ship, description of the garbage and the estimated amount incinerated or discharged;
(c) the Garbage Record Book shall be kept on board the ship and in such a place as to be available for inspection in a reasonable time. This document shall be preserved for a period of two years after the last entry is made on the record;
(d) in the event of discharge, escape or accidental loss referred to in regulation 6 of this Annex an entry shall be made in the Garbage Record Book of the circumstances of, and the reasons for, the loss.
(4) The Administration may waive the requirements for Garbage Record Books for:
(i) any ship engaged on voyages of 1 hour or less in duration which is certified to carry 15 persons or more; or
(ii) fixed or floating platforms while engaged in exploration and exploitation of the seabed.
(5) The competent authority of the Government of a Party to the Convention may inspect the Garbage Record Book on board any ship to which this regulation applies while the ship is in its ports or offshore terminals and may make a copy of any entry in that book, and may require the master of the ship to certify that the copy is a true copy of such an entry. Any copy so made, which has been certified by the master of the ship as a true copy of an entry in the ship’s Garbage Record Book, shall be admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of a Garbage Record Book and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
(6) In the case of ships built before 1 July 1997, this regulation shall apply as from 1 July 1998.
* Refer to the Guidelines for the development of garbage management plants adopted by the Marine Environment Protection Committee of the Organization by resolution MEPC.71(38)
Appendix
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