Senate executive documents, 92d Congress, 2d session. O. Amendments to convention for safety of life at sea, 1960, message from the President of United States transmitting 11 amendments to convention for safety of life at sea, 1960 (intergovernmental maritime consultative organization (IMCO) resolutions A.146 (ES.IV) and A 1.174 (VI); adopted in 1968 and 1969); July 24, 1972.