On 19 December 2023 the US released the geographic coordinates defining the outer limits of the U.S. continental shelf in areas beyond 200 nautical miles from the coast, which, according to the USA, are determined “in accordance with customary international law, as reflected in the relevant provisions of the 1982 United Nations Convention on the Law of the Sea, and the Scientific and Technical Guidelines of the Commission on the Limits of the Continental Shelf”. The Executive Summary (2023) provides further details. Overlapping claims with the extended continental shelf areas of Canada, The Bahamas, and Japan require delimitation. Relevant delimitation agreements have been reached with Cuba, Mexico, and Russia, on which see the related announcement on 18 December 2023, whereby the President transmitted to the Senate for consideration the 2017 Treaty between the United States of America and the Republic of Cuba on the Delimitation of the Continental Shelf in the Eastern Gulf of Mexico beyond 200 Nautical Miles and the 2017 Treaty between the Government of the United States of America and the Government of the United Mexican States on the Delimitation of the Maritime Boundary in the Eastern Gulf of Mexico (both not yet in force; not yet public but will be accessible here). For further information see the dedicate webpage on the US extended continental shelf claim.
De Maribus 