German submarine U-2551 was a Type XXI U-boat of Nazi Germany's Kriegsmarine during World War II. The Elektroboote submarine was laid down on 8 December 1944 at the Blohm & Voss yard at Hamburg, launched on 31 March 1945, and commissioned on 24 April 1945 under the command of Kapitänleutnant Gerhard Schaar.
U-2551 was a brand new, high technology electric boat which could run constantly submerged rather than having to surface to recharge her batteries every day the way submarines until that point had had to do. Unfortunately for the Germans, these advanced vessels were only introduced to the Kriegsmarine late in 1944, much too late to influence the Battle of the Atlantic, and too late for many of them to serve in an offensive capacity at all.
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