In what year was the man under whose command the 1st U-boat Flotilla was founded born?
Karl Dönitz Karl Dönitz (sometimes spelt Doenitz) (] ; 16 September 1891 – 24 December 1980) was a German admiral who played a major role in the naval history of World War II. Dönitz briefly succeeded Adolf Hitler as the head of state of Germany.
Peter Zschech "Kapitänleutnant" Peter Zschech (died 24 October 1943) was the second commander of the  . He earned notoriety as the first (and thus far only) commanding officer to commit suicide while in active command of a naval vessel, as well as the only submariner to ever do so while underwater.