- Deep Sea Domestic Transportation of Freight
– sic code 4424 / 8 companies - Deep Sea Foreign Transportation of Freight
– sic code 4412 / 13 companies - Deep Sea Transportation of Passengers, Except by Ferry
– sic code 4481 / 2 companies - Ferries
– sic code 4482 / 3 companies - Freight Transportation on the Great Lakes – St. Lawrence Seaway
– sic code 4432 / 2 companies - Marinas
– sic code 4493 / 21 companies - Marine Cargo Handling
– sic code 4491 / 33 companies - Towing and Tugboat Services
– sic code 4492 / 16 companies - Water Transportation of Freight, NEC
– sic code 4449 / 16 companies - Water Transportation of Passengers, NEC
– sic code 4489 / 10 companies - Water Transportation Services, NEC
– sic code 4499 / 22 companies