The sonar room is dominated by sonar consoles. Two modes of sonar observation are used. In the "active" mode, the echoes of sound waves sent out from the sub are timed and analyzed. In the passive ...

PORTLAND — Mark Manzer sat aboard the nuclear submarine USS Sam Houston as it glided through the Pacific Ocean’s depths. The sonar technician listened through headphones to the noises picked up by the ...

Sonar 2087 equips eight RN Type 23 frigates. Pictured here is the sonar room of HMS Westminster – the sonar director is nearest to the camera, with the four dual-screen sonar operator consoles ranged ...