- Deep sea foreign transportation of freight (67)
- Deep sea domestic transportation of freight (51)
- Freight transportation on the great lakes (9)
- Water transportation of freight (29)
- Deep sea passenger transportation, except ferry (15)
- Ferries (11)
- Water passenger transportation (26)
- Marine cargo handling (66)
- Towing and tugboat service (41)
- Marinas (389)
- Water transportation services, (152)