Abstract This is the latest in a series of annual surveys reviewing dispute settlement in the law of the sea, both under the UN Convention on the Law of the Sea and outside the framework of the Convention. The main developments during 2011 were: the delivery by the Sea-Bed Disputes Chamber of its advisory opinion on Responsibilities and Obligations of States sponsoring Persons and Entities with respect to Activities in the Area; the referral of a new case to the International Tribunal for Law of the Sea (ITLOS) relating to the arrest and detention of a bunkering vessel in the exclusive economic zone (EEZ) (the Virginia G case); the International Court of Justice's judgments rejecting the requests of Costa Rica and Honduras to intervene in t...