Improved operation, maintenance, and financing of the nation's water transportation system, including coastal and Great Lakes ports, the St. Lawrence Seaway, and the inland and intracoastal waterways : hearings before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, Ninety-seventh Congress, second session, March 2, 3, 9, 10, 11, 16, 17, 18, 23, and 24, 1982.