Lol..yeah i had my deck gun crew, and myself fire about 50 shells at the merchant, plus all the torpedoes hitting in different spots, at different depths and with different detonators...didnt sink...i even advanced time compression for 24 hours and still nothing. Ive encountered the same problem in career mode, when found a convoy on a patrol, and torpedoed a ship like 10 times, never sank..
