The International Convention on Civil Liability for Bunker Oil Pollution Damage (BUNKER) is an International treaty listed and administered by the International Maritime Organization, signed in London on 23 March 2001 and in force generally on 21 November
2008.
The purpose is to adopt uniform international rules and procedures for determining questions of liability and providing adequate compensation. In the convention, Bunker Oil is fuel used to power the ship. The convention covers leakage of that oil, and requires signatories to the convention to have their ships appropriately insured against such
leakages.