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