The Type ? U-boat, designed in key during 1933?1944, had been a brand new generation of German assault submarines. They had a much more powerful striking force compared to the Type ?.They had five torpedo pipes, four inside bow plus one astern and could carry eleven torpedoes onboard or 22 TMA (23 TMB) mines. They also had 88mm fast-firing deck gun and 20mm AA gun. At the beginning of the war, the 88mm deck gun ended up being invaluable in sinking vendor vessels, enabling the more expensive torpedoes to be saved for bigger and much more valuable objectives. These Type ? U-boats had been the spark plug of the �Wolf Pack�. Their manufacturing was at large people. As well, German Navy suffered the large losses of the force, losing 784 U-boat, of which 519 were Type ? U-boat.?