Thread: UU Gerät achtern / UU device astern
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Old 29th July 2025, 21:14
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Re: UU Gerät achtern / UU device astern
Thanks (as always) Nick. Thought it was this (passive sonar):

The GHG sonar was, by WWII standards, very advanced. It had a spaced array of multiple crystal hydrophones with electric signal delays. This radar could detect a ship out to 10NM in quiet conditions, and because of the signal delaying, it was possible to determine a contact’s bearing and course.
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