What MARPOL Annex II - Regulations for the Control of Pollution by Noxious Liquid Substances in Bulk requires
MARPOL Annex II regulates the discharge into the sea of noxious liquid substances (NLS) carried in bulk by ships. It entered into force on 6 April 1987 under the MARPOL Protocol 1978 and was substantially revised by IMO Resolution MEPC.118(52) in 2004 (entering into force 1 January 2007). The revised Annex II classifies NLS into four categories (X, Y, Z, and OS/Other Substances) based on hazard to the marine environment, replaces the former A/B/C/D categories, and sets minimum conditions for discharge including dilution requirements, cargo pump stripping efficiencies, prewashing requirements, and port reception facility use. Chemical tankers carrying NLS in bulk are also subject to the IBC Code for design and construction.
Pillar: Maritime & Shipping · Authority: International Maritime Organization (IMO) - MARPOL 73/78 Annex II, as revised by IMO Resolution MEPC.118(52) (2004); mandatory under MARPOL Protocol 1978 for States that have ratified MARPOL Annex II · Version: 1.0.0 · Last updated:
Primary source: https://www.imo.org/en/About/Conventions/Pages/International-Convention-for-the-Prevention-of-Pollution-from-Ships-(MARPOL).aspx
SHA-256 integrity: 73c3d77774090c09a293def07efe30c61ca9b660332e107ba1ae4d0edf29e22c
Primary Citations — 6 traced to source
- {"source":"MARPOL 73/78 Annex II - Regulations for the Control of Pollution by Noxious Liquid Substances in Bulk, as revised by IMO Resolution MEPC.118(52) (2004 amendments entering into force 1 January 2007)","url":"https://www.imo.org/en/About/Conventions/Pages/International-Convention-for-the-Prevention-of-Pollution-from-Ships-(MARPOL).aspx","relevant_sections":"Regulation 6 (application of Categories X, Y, Z), Regulation 13 (discharge conditions: Category X prohibition, prewash requirements, Category Y/Z sea discharge conditions - 7 knots, 12nm, 25m depth), Regulation 14 (Procedures and Arrangements Manual), Regulation 36 (Cargo Record Book - mandatory recording and 3-year retention), Appendix I (list of NLS classified by category)"}
- {"source":"MARPOL Protocol 1978 - Extension of MARPOL 73 to Include Annex II (Chemical Tankers)","url":"https://www.imo.org/en/About/Conventions/Pages/International-Convention-for-the-Prevention-of-Pollution-from-Ships-(MARPOL).aspx","relevant_sections":"MARPOL Protocol 1978 Article II: extension of mandatory Annexes I and II to Protocol Parties; entry into force of Annex II on 6 April 1987 - Annex II was not in force under the original 1973 MARPOL Convention and required the 1978 Protocol to bring it into mandatory effect"}
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