| 50100 | Boat rental for passenger conveyance with crew (except for inland waterway services) |
| 50100 | Coastal water transport for passengers |
| 50100 | Excursion, cruise or sightseeing boat operation (except for inland waterway service) |
| 50100 | Hovercraft operator between UK and international ports (passenger) |
| 50100 | Passenger ferry between UK and international ports |
| 50100 | Passenger ferry on domestic or coastal routes |
| 50100 | Passenger shipping service (sea and coastal) |
| 50100 | Pleasure boat rental with crew (e.g. For fishing cruises) (except for inland waterway service) |
| 50100 | Sea ferry (passenger) |
| 50100 | Transport of passengers over seas and coastal waters |
| 50100 | Transport of passengers over water (except for inland waterway service) |
| 50100 | Water taxis operation (except for inland waterway service) |
| 50100 | |