- Marine salvaging and surveying services (2)
- Marine salvaging (1)
- Marine surveyors (12)
- Water transportation cleaning services (2)
- Boat cleaning (8)
- Ship cleaning (1)
- Boat and ship rental and leasing, except pleasure (8)
- Boat hiring, except pleasure (1)
- Boat rental, commercial (8)
- Chartering of commercial boats (5)
- Steamship leasing (1)
- Canal operation (1)
