| 52220 | Berthing activities |
| 52220 | Bunkering services |
| 52220 | Canal maintenance |
| 52220 | Canal operation |
| 52220 | Cargo superintendent |
| 52220 | Cargo terminal |
| 52220 | Commissioners of northern lighthouses |
| 52220 | Diving contracting (non leisure) |
| 52220 | Dock authority |
| 52220 | Floating bridge company |
| 52220 | Gas liquefaction for water transportation purposes |
| 52220 | Harbour authority |
| 52220 | Harbour operation |
| 52220 | Ice breaking services |
| 52220 | Landing stage |
| 52220 | Lighter lessee or owner |
| 52220 | Lighterage activities |
| 52220 | Lighthouse activities |
| 52220 | Lighthouse Authority |
| 52220 | Lightship |
| 52220 | Local authority canal services |
| 52220 | Local authority docks and harbours |
| 52220 | Local authority lighthouse service |
| 52220 | Marine cargo lighterage |
| 52220 | Marine cargo superintendent |
| 52220 | Marine salvage |
| 52220 | Navigation activities |
| 52220 | Offshore positioning services |
| 52220 | Passenger terminal services |
| 52220 | Pier operation (not amusement) |
| 52220 | Pier owner or authority (not amusement) |
| 52220 | Pilotage activities |
| 52220 | Port Authority |
| 52220 | Port of London Authority |
| 52220 | Salvage activities supporting water transport activities |
| 52220 | Shore base (sea transport) |
| 52220 | Terminal facilities operation (water transport) |
| 52220 | Towing services for distressed freight vessels in inland waters |
| 52220 | Towing services for distressed freight vessels on sea and coastal waters |
| 52220 | Towing services for distressed passenger vessels in inland waters |
| 52220 | Towing services for distressed passenger vessels on sea and coastal waters |
| 52220 | Trinity House |
| 52220 | Tug boat service for inland waterways |
| 52220 | Tug boat service for offshore installations |
| 52220 | Tug boat service for sea barge or off-shore well |
| 52220 | Tug boat service for sea barges on domestic coastal routes |
| 52220 | Tug lessee or owner for inland waterways service |
| 52220 | Tug owner or lessee for in port service or salvage |
| 52220 | Vessel laying up and storage services |
| 52220 | Vessel registration services |
| 52220 | Water transport (supporting activities) |
| 52220 | Waterway locks operation |
| 52220 | Wharfinger |
| 52220 | Wreck raising |
| 52220 | |