MARPOL Annex I – Regulations for the Prevention of Pollution by Oil
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee-Marine Environment Protection Committee Circulars - MSC-MEPC.2 Circulars - MSC-MEPC.2/Circular.10 – Unified Interpretations on the Application of SOLAS, MARPOL and Load Lines Requirements to Conversions of Single-Hull Oil Tankers to Double-Hull Oil Tankers or Bulk Carriers – (1 December 2011) - Annex – Unified Interpretations on the Application of SOLAS, MARPOL and Load Lines Requirements to Conversions of Single-Hull Oil Tankers to Double-Hull Oil Tankers or Bulk Carriers - Appendix 2 – Unified Interpretations on the Application of MARPOL Requirements to Conversions of Single-Hull Oil Tankers to Double-Hull Oil Tankers or Bulk Carriers - MARPOL Annex I – Regulations for the Prevention of Pollution by Oil

MARPOL Annex I – Regulations for the Prevention of Pollution by Oil

1 For single-hull oil tanker conversion into double-hull oil tanker

 For the purpose of determining the application date for the requirements of regulation 20.4 footnote of MARPOL Annex I, where an oil tanker has undergone a major conversion, as defined in regulation 1 of MARPOL Annex I, that has resulted in the replacement of the forebody, including the entire cargo carrying section, the major conversion completion date of the oil tanker shall be deemed to be the date of delivery of the ship referred to in regulation 20.4 of MARPOL Annex I, provided that:

  • .1 the oil tanker conversion was completed before 6 July 1996;

  • .2 the conversion included the replacement of the entire cargo section and forebody and the tanker complies with all the relevant provisions of MARPOL Annex I applicable at the date of completion of the major conversion; and

  • .3 the original delivery date of the oil tanker will apply when considering the 15 years of age threshold relating to the first CAS survey to be completed in accordance with regulation 20.6 of MARPOL Annex I.

2 For single-hull oil tanker conversion into bulk carrier

  2.1 The relevant requirements of MARPOL Annex I should be applied to the entire bulk carrier.

  2.2 With regard to conversions from single-hull oil tankers to bulk, regulation 12A of MARPOL Annex I should be applied to the entire bulk carrier, i.e. all new and existing fuel oil tanks.


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