| 309 | Common hydraulic oil system for hatches/ports |
| 37 | Gas/ventilation systems for cargo holds/tanks |
| 43 | Anchoring, mooring, towing equipment |
| 442 | Tools/equip. for engineers, electr., boatswains, carpenters |
| 57 | Ventilation, air-conditioning, heating systems |
| 6 | Machinery main components |
| 601 | Diesel engines |
| 646 | Exhaust gas boilers |
| 651 | Motor aggregates |
| 7 | Systems for machinery main components |
| 70 | Fuel systems |
| 73 | Compressed air systems |
| 743 | Exhaust gas systems for propulsion machinery |
| 744 | Exhaust gas systems for motor aggregates |
| 745 | Exhaust gas systems for boilers |