U-boat commanders (Kriegsmarine)

Gerhard Bigalk (26 November 1908 – 17 July 1942) was a captain with the Kriegsmarine during World War II and commander of U-751. He was a recipient of the Knight's Cross of the Iron Cross of Nazi Germany.

Ulrich Heyse (20 September 1906 in Berlin-Friedenau – 19 November 1970 in Flensburg) was a German U-boat commander in World War II and recipient of the Knight's Cross of the Iron Cross.