| 109 | Maintenance systems, instruction material |
| 12 | Quality assurance, general work, models |
| 14 | Work on ways, launching, docking |
| 17 | Ship repair, special services |
| 192 | Gas, oxygen, coal, oil |
| 20 | Hull materials, general hull work |
| 30 | Hatches, ports |
| 35 | Loading/discharging systems for liquid cargo |
| 38 | Auxiliary systems, equipment for cargo |
| 381 | Sounding, surveil. and operating equipment for cargo systems |
| 40 | Manoeuvring machinery, equipment |
| 41 | Navigation, searching equipment |
| 414 | Underwater searching equipm.: asdic, echo sounder, speed log |
| 416 | Navigation tv |
| 417 | Clocks, facsimile recorders, misc. nautical equipment |
| 42 | Communication equipment |
| 423 | Data transmission plants, communication |
| 43 | Anchoring, mooring, towing equipment |
| 53 | Ext. deck covering, ladders, steps, fore, aft gangway |
| 6 | Machinery main components |
| 60 | Diesel engines for propulsion |
| 61 | Steam machinery for propulsion |
| 62 | Other types of propulsion machinery |
| 637 | Main reduction gears w/thrust bearings and couplings |
| 638 | Central gears (joint auxiliary gear, not for propulsion) |
| 65 | Motor aggregates for main electric power production |
| 651 | Motor aggregates |
| 66 | Other aggr., gen. for main, emergency el. power production |
| 7 | Systems for machinery main components |
| 79 | Automation systems for machinery |
| 791 | Manoeuvre consoles, main consoles |
| 792 | Common automation equipment, engine room alarm systems |
| 793 | Autom. equip. for prop. mach. and transmis., eng. telegraph |
| 795 | Automation equipment for motor/turbo aggregates |
| 797 | Automation equipment for other machinery components |
| 803 | Bilge systems |
| 815 | Fire fighting systems w/gas (CO2, halon, etc) |
| 85 | Common electric, electronic systems |
| 86 | Electric power supply |
| 861 | Generators/alternators |
| 865 | Transformers |
| 867 | Rectifiers and converters |
| 87 | Common electric distribution systems |
| 871 | Main switchboards |
| 872 | Emergency switchboards |
| 875 | Distribution panels and boards |
| 88 | Electric cable installation |
| 89 | Electric consumer systems |
| 898 | Electric motors |