The Type XXI U-Boat was a German submarine design developed during the final years of World War II. The Type XXI was a revolutionary design that incorporated many innovative features, including a streamlined hull, powerful electric motors, and advanced sensors. The submarine was designed to be fast, stealthy, and deadly, with a top speed of over 17 knots on the surface and 12 knots submerged.

The Type XXI U-Boat was constructed by the German shipyard, Blohm + Voss, in Hamburg, and a total of 118 boats were planned, but only 4 were completed before the end of the war. Despite their limited numbers, the Type XXI U-Boats played a significant role in the final months of the war, conducting a series of daring raids against Allied shipping.

Silent Hunter 5: Unleashing the Type XXI U-Boat**