21st U-boat Flotilla
21st U-boat Flotilla was a unit of Nazi Germany's Kriegsmarine before and during World War II. It was formed in 1935 as a Schulverband based at Kiel under the command of Kapitän zur See Kurt Slevogt.
In May 1937 the unit moved to Neustadt and was redesignated as the Unterseebootsschulflottille,, commanded by Kapitänleutnant Heinz Beduhn.
In June 1940 it was redesignated 21. Unterseebootsflottille, and in July 1941 the flotilla moved bases to Pillau. The flotilla was disbanded in March 1945.Flotilla commanders
- Kapitän zur See Kurt Slevogt
- Kapitänleutnant Heinz Beduhn
- Korvettenkapitän Paul Büchel
- Korvettenkapitän Otto Schuhart
- Kapitänleutnant Herwig Collmann
Assigned U-boats
Fifty-one U-boats were assigned to this flotilla during its service.
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