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For other uses, see Delphin (disambiguation).

The Delphin (dolphin) was a German midget submarine created during World War II. Designed in 1944, only three prototypes were created by the Kriegsmarine by the end of the war, all of which were destroyed. The Delphin was built for underwater speed attacks, as German engineers under the leadership of Ulrich Gabler discovered that past midget submarines were too slow to match the speeds of large ships in the English Channel.

The Delphin weighed 2.5 tons and was easily recognizable due to its tear-drop shape, which allowed the vessel to travel through the water at higher speeds. During trials the submarine reached a speed of seventeen knots while submerged. On 19 January 1945, the first prototype was destroyed after a collision with a boat, and resulted in further testing to be abandoned. Two other prototypes under construction in Berlin were moved to Pötenitz near Trave, where they were blown up as Allied forces approached.


  • Erwin F. Sieche. "German Human Torpedoes and Midget Submarines". Information on the Delphin class. Retrieved July 30, 2006. 
  • "". Information on the Delphin class and its operations. Retrieved July 30, 2006. 
  • Jane's Naval Review (Second year of issue); Small submarines how dangerous?