| Naics index | Naics index description |
|---|---|
| 488320 | Marine cargo handling services |
| 488320 | Ship hold cleaning services |
| 488320 | Stevedoring services |
| 488330 | Cargo salvaging, marine |
| 488330 | Docking and undocking marine vessel services |
| 488330 | Harbor tugboat services |
| 488330 | Marine salvaging services |
| 488330 | Marine vessel traffic reporting services |
| 488330 | Piloting services, water transportation |
| 488330 | Radio beacon (i.e., ship navigation) services |