I agree, I used to think coming home with any torps left was lame. Now that I'm in late 1943, I'm happy enough to get a few hits in on a convoy. Several times now I've had to scoot back to port with serious damage, due to the overzealous behavior I learned from '39 to late '41, and probably into most of 1942.
Strangely enough however, I finally got my first 100k+ patrol despite the tenacious escorts with ASDIC, though I never attack anymore without 200m of water or more.
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