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The Strange Tale of Nazi Germany's Super Submarines (That Never Fired a Shot)

http://nationalinterest.org/files/st...?itok=9n3n2jXz

Quote:

On May 4, 1945 one of the most advanced submarines in the world crept up to a British Royal Navy cruiser. U-2511 was one of Germany’s new Type XXI-class “wonder” submarines, and she was hunting for Allied ships.

More than 250 feet long and displacing 1,620 tons, the Type XXI packed six hydraulically-reloaded torpedo tubes capable of firing more than 23 stored torpedoes. This arsenal could turn a convoy into sinking, burning wreckage.

But the real improvement lay deep inside the U-boat’s bowels. There rested an advanced electric-drive engine that allowed the submersible to travel underwater at significantly higher speeds—and for longer periods—than any submarine that came before

She also represented one of the Third Reich’s biggest failures.