April 09, 2022
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Johann-Friedrich Wessels (28 May 1904 in Wilhelmshaven - Rüstringen – 9 February 1988 in Oldenburg) was a German chief engineer on a U-boat in World War II and recipient of the Knight's Cross of the Iron Cross. Wessels was chief engineer on board of U-47 during Günther Priens' infiltration of Scapa Flow and sinking of HMS Royal Oak.
  • Wehrmacht Long Service Award 4th and 3rd Class (2 October 1936)
  • Iron Cross (1939)
    • 2nd Class (25 September 1939)
    • 1st Class (17 October 1939)
  • U-boat War Badge (1939) (19 December 1939)
  • U-boat Front Clasp in Bronze (4 October 1944)
  • Knight's Cross of the Iron Cross on 9 March 1944 as Kapitänleutnant (Ing.) and chief engineer on U-198


Karl-Heinz Wiebe (born 10 April 1916) was a German chief engineer on a U-boat in World War II and recipient of the Knight's Cross of the Iron Cross. He was born in Kiel.
  • Wehrmacht Long Service Award 4th Class (5 April 1939)
  • Iron Cross (1939)
    • 2nd Class (18 February 1940)
    • 1st Class (30 May 1940)
  • U-boat War Badge (1939) (21 March 1940)
  • Knight's Cross of the Iron Cross on 22 May 1944 as Kapitänleutnant (Ing.) and chief engineer on U-178