гідроакустичний маяк
non-directional beacon (NDB) / non directional beacon
array sonar
dipping sonar
hull-mounted sonar
passive sonar
shipborne sonar
sonar (sound navigation and ranging)
sonar sphere
buried object scanning sonar
cylindrical array sonar
hull mounted sonar
sonar transmitter
flank array sonar
surface sonar system
sonar countermeasures and deception
beacon system
crash beacon
identification beacon
rotating (radio) beacon
acoustic beacon
beacon bearing
beacon radar
beacon receiver
bearing beacon
crash locator beacon
landing beacon
navigation beacon
non-directional radio beacon with marker (NDB/MRB)
equisignal radio-range beacon
rotating radio beacon
chain radar beacon
non-directional beacon (NDB )