11. It was recorded using an autonomous hydrophone array. 12. SOSUS systems consisted of bottom mounted hydrophone arrays connected by underwater cables to facilities ashore. 13. At 09 : 00, the submarine left to test a new towed hydrophone array. 14. The fatigue crack had grown over time from a hydrophone port in the bracing tube. 15. U-boat U-604 hydrophone made contact with the convoy's screws. 16. A Type 3 sonar and a Type 93 hydrophone were fitted to detect any submarines. 17. They converse in high yelping sounds, picked up by the Ak Nu's hydrophone . 18. "Musashi " was built with a Type 0 hydrophone system in her bow. 19. Seismic wave fields are recorded by a seismometer, hydrophone ( in water ), or accelerometer. 20. Her anti-submarine features included ASDIC, a hydrophone , and four depth-charge throwers.
