This industry comprises establishments primarily engaged in providing deep sea, coastal, Great Lakes, and St. Lawrence Seaway water transportation. Marine transportation establishments using the facilities of the St. Lawrence Seaway Authority Commission are considered to be using the Great Lakes Water Transportation System. Providing inland water transportation on lakes, rivers, or intracoastal waterways (except on the Great Lakes System)--are classified in Industry 48321, Inland Water Transportation; Providing scenic and sightseeing water transportation, such as harbor cruises--are classified in Industry 487210, Scenic and Sightseeing Transportation, Water; and Operating floating casinos (i.e., gambling cruises, river boat gambling casinos)--are classified in Industry 713210, Casinos (except Casino Hotels).
