Amendments to merchant shipping statutes (Intercoastal shipping act penalties, terms of office of Maritime Commissioners, mobile trade fairs, construction differential subsidy ceiling, war risk insurance, waiver of coastwise laws) : hearings before the Subcommittee on Merchant Marine and Fisheries of the Committee on Commerce, Eighty-ninth Congress, first session on S. 1141, to conform the penalties of the Intercoastal Shipping Act, 1933, with the Shipping Act,1916, S. 1348, to provide that commissioners of the Federal Maritime Commission shall hereafter be appointed for a term of 5 years, and for other purposes, S. 1772, to amend the Merchant Marine Act, 1936, to provide for the continuation of authority to develop American-flag carriers and promote the foreign commerce of the United States through the use of mobile trade fairs, H.R. 4346, to amend section 502 of the Merchant Marine Act, 1936, relating to construction differential subsidies, H.R. 4526, to extend the provisions of title XII of the Merchant Marine Act, 1936, relating to war risk insurance, for an additional 5 years ending September 7, 1970, H.R. 6164, to authorize the Secretary of the Treasury to permit foreign-flag vessels to transport passengers between the United States and Puerto Rico to attend the 7th assembly of the world convention of Churches of Christ, May 25 and 27, 1965