| 3 | Equipment for cargo |
| 309 | Common hydraulic oil system for hatches/ports |
| 353 | Loading/discharging systems in pump rooms |
| 354 | Loading/discharging systems in cargo tanks |
| 356 | Separate stripping systems |
| 36 | Freezing, refrigerating, heating systems for cargo |
| 438 | Common hydraulic oil system for anchoring/mooring equipment |
| 439 | Common hydr. oil syst. for anchoring/mooring/cargo winches |
| 465 | Fish pumping plants and landing equipment |
| 481 | Drilling equipment |
| 513 | Other internal doors w/coamings |
| 57 | Ventilation, air-conditioning, heating systems |
| 581 | Sanitary supply systems |
| 582 | Sanitary discharge systems, accommodation drainage systems |
| 583 | Bathtubs, bidets, shower cabinets, w.c., washbasins |
| 6 | Machinery main components |
| 64 | Boilers, steam, gas generators |
| 7 | Systems for machinery main components |
| 721 | Sea water cooling systems |
| 75 | Steam, condensate, feed water systems |
| 76 | Distilled, make-up water systems |
| 761 | Distilled and make-up water systems |
| 801 | Ballast systems, solid ballast |
| 803 | Bilge systems |
| 813 | Fire/wash down syst., emergency fire pumps, sprinkler syst. |
| 814 | Fire fighting systems for external fires |
| 819 | Fire fighting systems w/other agents |
| 83 | Special common hydraulic oil systems |