| 112 | Classification and statutory fees and certificates |
| 15 | Quality control, measurements, tests, trials |
| 442 | Tools/equip. for engineers, electr., boatswains, carpenters |
| 481 | Drilling equipment |
| 6 | Machinery main components |
| 64 | Boilers, steam, gas generators |
| 7 | Systems for machinery main components |