| 42 | Communication equipment |
| 421 | Radio plant, gmdss |
| 422 | Lifeboat radio transmitters, epirbs |
| 423 | Data transmission plants, communication |
| 424 | Vhf/uhf telephones |
| 425 | Calling/command/crew call telephone plants, walkie-talkies |
| 503 | Lifesaving, safety and emergency equipment |
| 546 | Hobby, sports and entertainment equipment |