- Marine salvaging and surveying services (2)
- Marine salvaging (1)
- Marine surveyors (12)
- Salvaging, distressed vessels and cargoes (2)
- Water transportation cleaning services (5)
- Boat cleaning (4)
- Ship cleaning (1)
- Boat and ship rental and leasing, except pleasure (8)
- Boat rental, commercial (6)
- Chartering of commercial boats (21)
- Steamship leasing (2)
- Boathouses, commercial (2)
