- Marine salvaging and surveying services (1)
- Marine surveyors (4)
- Water transportation cleaning services (4)
- Boat and ship rental and leasing, except pleasure (2)
- Boat rental, commercial (3)
- Chartering of commercial boats (3)
- Marine dismantling and scrapping services (1)
- Ship dismantling (1)
- Boathouses, commercial (2)
- Canal operation (1)
