I have done it, not by purpose,
I was in an harbour nearby Italy, (not know the name of it) and I sank 1 V&W Destroyer and an Hunter 1 Destroyer in 1941. on an really lucky Torpedo salvo launch....I Fired in an sort of V formation and the boats passed eachother and 100 meters further both impacts after eachother....after that 2 flower corvettes where hunting me and I ran 2 meters from the bottom of the sea floor...1 DC striked my Bow Torpedo room causing an flood..and that pulled me down on the sea floor and I stopped the boat immediatly , my hull degrated to 78%, the Flower kept DC me , and kept going on till my hull had 29% left and most of my stuff in my ship got damaged or destroyed......when I saw my chance I got away with 1 knot 3 meters from the ocean floor, and Got me Home......
Almost home, about 100 km from my harbour I got an airplane that gave the final blow
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