International Conventions, Protocols and Codes Home Our Work Marine Environment International Conventions, Protocols and Codes International Convention for the Prevention of Pollution of the Sea by Oil, 1954 (OILPOL). 1981 Edition. IMO. Supplement Relating to the International Convention for the Prevention of Pollution of the Sea by Oil, 1954. 1981 Edition. IMO. International Convention Relating to Intervention on the High Seas in Cases of Oil Pollution Casualties (Intervention), 1969. 1997 Edition. IMO. International Convention on Civil Liability for Oil Pollution Damage, 1969 (CLC 1969). 1977 Edition. IMO. International Conference on Salvage, 1989. 1989 Edition. IMO. International Convention on Liability and Compensation for Damage in Connection with the Carriage of Hazardous and Noxious Substances by Sea, 1996 (HNS Convention). 1996 Edition. IMO. International Convention on Civil Liability for Bunker Oil Pollution Damage, 2001. 2004 Edition. IMO. MARPOL. Consolidated Edition, 2011. IMO. International Convention on Oil Pollution Preparedness, Response and Co-Operation, 1990 (OPRC, 1990). 1991 Edition. IMO. Protocol on Preparedness, Response and Co-Operation to Pollution Incidents by Hazardous and Noxious Substances, 2000 (OPRC-HNS PROTOCOL 2000). 2002 Edition. IMO. International Maritime Dangerous Goods Code (IMDG Code). 2010 Edition. IMO. IMDG Code Supplement. 2010 Edition. IMO. International Maritime Solid Bulk Cargoes Code (IMSBC Code) and Supplement. 2012 Edition. IMO. International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code). 2007 Edition. IMO. Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (BCH Code). 2009 Edition. IMO.