Treaties and other international acts series. 4900. International convention for prevention of pollution of sea by oil, 1954, between United States and other Governments, opened for signature London, Hay 12, 1954, acceptance by United States deposited with Intergovernmental Maritime Consultative Organization, subject to understanding, reservations, and recommendation, Sept. 8, 1961 [proclaimed by President of United States Dec. 8, 1961: entered into force Dec. 8, 1961].