сферичний обтічник гідролокатора
military sphere
defense sphere
celestial sphere
corrosive atmo-sphere
isothermal gas sphere
turbulence sphere
sphere
array sonar
dipping sonar
hull-mounted sonar
passive sonar
shipborne sonar
sonar (sound navigation and ranging)
buried object scanning sonar
cylindrical array sonar
hull mounted sonar
sonar beacon
sonar transmitter
flank array sonar
surface sonar system
sonar countermeasures and deception