At which point in time? Erich Raeder was the head KM guy in charge at one time-and another was Karl Donitz. Best regards and hope this helps?
Erich Rader was the commander from 1935-1943. Karl Donitz then took command until the last few days of the war when Hans-Georg von Friedeburg took over and signed the document declaring the official surrender of German forces on behalf of the German Navy