I see this loads of times and assume its 'normal'. He is listening but keeps unpredictable movements going to foil any attempt maybe to torp him. Only today, caught a convoy in the Carolinas and the escorts were looking at the wrong side of convoy and I had a turkey shoot. 5 sunk, 3 damaged and 1 escort sunk, who was 'listening' and dud not move about 2500 yards away. I didnt aim actually AT him, but a freighter that turned!!!
Ran out of torps so broke off.
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Captain!, there's a destroyer on the por........ periscope is flooded Sir!
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