The sort IX U-boat ended up being a growth of the sort IX U-boat. It absolutely was a great ocean-gonging submarine, with the capacity of running in great distant waters and more roomy and comfortable versus Type IX. Its larger size, however, designed that its scuba diving speed was rather slower versus Type IX. Minus the external saddle tanks regarding the Type IX, the Type IX was a much sleeker looking ship and had greater fore and aft deck area. She had six torpedo tubes, four in the bow and two astern. Around 23 torpedoes were saved. Secondary armament had been given by one 105 mm deck gun with about 110 rounds. AA armament differed throughout the war.