The Type ? U-boat, developed in key during 1933?1944, had been a new generation of German assault submarines. They would a more effective striking force versus Type ?.They had five torpedo tubes, four inside bow and something astern and could carry eleven torpedoes onboard or 22 TMA (23 TMB) mines. Additionally had 88mm fast-firing deck tool and 20mm AA tool. At the start of the war, the 88mm deck gun was beneficial in sinking merchant vessels, enabling the greater costly torpedoes become conserved for bigger and a lot more valuable goals. These Type ? U-boats was indeed the spark plug about the �Wolf Pack�. Their production was at big users. At the same time, German Navy suffered the big losings with this particular force, losing 784 U-boat, which 519 were Type ? U-boat.?