 |
|
depth-sounding : 42 phrases in 16 subjects |
| Acoustics | 2 |
| Cartography | 1 |
| Communications | 1 |
| Construction | 1 |
| Electronics | 2 |
| General | 2 |
| Geophysics | 5 |
| Makarov | 2 |
| Military | 3 |
| Nautical | 9 |
| Navigation | 1 |
| Oil and gas | 2 |
| Physics | 3 |
| Surveying | 3 |
| Technology | 4 |
| United Nations | 1 |