| 23 | Cargo area - hull small vessels |
| 285 | Material protection of ballast, sea w. and stabil. tanks, cofferdams, chain lockers |
| 601 | Diesel engines |
| 641 | Main boilers |
| 651 | Motor aggregates |
| 70 | Fuel systems |
| 71 | Lube oil systems |
| 73 | Compressed air systems |
| 731 | Starting air systems (high pressure) |
| 732 | General purpose air systems for engine room (low pressure) |
| 734 | Instrument air supply systems |