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Originally Posted by Petr
I have one more question. When I surface or dive and I m abot 160ft, one crew member says something like "Passing trough the ?????" I m not English, so I don t understand it. What does it mean?
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They are going through the 'thermal layer' It is a layer where the warmer water above and the cold water below mix and create a layer that the sonar has a hard time with. The signal can be deflected or even bounce off. So if it gets deflected, even if they get contact with you, you are not where you appear to be.
Peabody
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