Almost lost my boat last night to one of those... January of '43 and I decided to patrol the Atlantic side of the Gibralter strait. Did my hydrophone check and found a convoy. Set up for my attack and found a large merchant, and a passenger cargo lightly escorted. Let loose my torps at long range and waited. Scored hits on both targets and heard the escort start searching with his ASDIC. Dodged him and thought I was in the clear when my hydrophone operator notified me of a warship to the south coming in fast. He got a fix on me and next thing I know I have flooding in multiple compartments and I'm dropping fast. Managed to limp back to port 10 hours later with multiple casualties... That hedgehog scares the crap out of me...
