masked | |
gen. | скрытый |
acoustic communications | |
mil. | гидроакустическая связь |
echo-ranging: 54 phrases in 12 subjects |
Biology | 1 |
Electronics | 2 |
Fish farming pisciculture | 2 |
Hydrology | 1 |
Makarov | 3 |
Military | 5 |
Nautical | 15 |
Navigation | 5 |
Oceanography & oceanology | 1 |
Shipbuilding | 1 |
Technology | 15 |
Transport | 3 |