| 1 | Ship general |
| 11 | Insurance, fees, certificates, representation |
| 14 | Work on ways, launching, docking |
| 17 | Ship repair, special services |
| 2 | Hull |
| 20 | Hull materials, general hull work |
| 381 | Sounding, surveil. and operating equipment for cargo systems |
| 41 | Navigation, searching equipment |
| 42 | Communication equipment |
| 79 | Automation systems for machinery |
| 88 | Electric cable installation |