- Marine salvaging and surveying services (1)
- Marine surveyors (7)
- Salvaging, distressed vessels and cargoes (3)
- Boat cleaning (1)
- Boat and ship rental and leasing, except pleasure (8)
- Boat hiring, except pleasure (1)
- Boat rental, commercial (2)
- Chartering of commercial boats (2)
- Steamship leasing (1)
- Boathouses, commercial (2)
- Lighterage (1)
- Piloting vessels in and out of harbors (1)
