The U-505 Constructed at the docks of Hamburg, Germany, the U-505 was one of the German navy's Type IX-class submarines, a long-range attack boat developed with longer dive times and agility ...

German forces in Denmark had surrendered ... Type XXI U-boats and used them to developed their own submarine technology. The Type XXI design inspired the Soviet Union Whiskey-class and the U.S ...

Say hello to the Navy’s GUPPY submarine program of the early ... the testing and reverse engineering of two Nazi German Kriegsmarine Type XXI U-boats, which had been surrendered to the Americans ...