From 15 September to 2 October 1941, Heydemann, as commander of U-575, was part of Wolfpack Brandenburg operating southeast of Greenland in the North Atlantic. On 2 October, Heydemann sank Tuva of 4,652 gross register tons (GRT).[1] On U-575's third war patrol which was part of the second wave of Operation Drumbeat, also referred to as the Second Happy Time, Heydemann was given a special task and did not sink any ships.[2] On U-575's fourth war patrol which was part of the fifth wave of Operation Drumbeat, Heydemann sank Robin Hood of 6,887 GRT on 16 April 1942.[3][4]
Summary of career
As commander of U-575 Günther Heydmann is credited with the sinking of eight ships for a total of 48,920 gross register tons (GRT).
Busch, Rainer; Röll, Hans-Joachim (2003). Der U-Boot-Krieg 1939–1945 — Die Ritterkreuzträger der U-Boot-Waffe von September 1939 bis Mai 1945 [The U-Boat War 1939–1945 — The Knight's Cross Bearers of the U-Boat Force from September 1939 to May 1945] (in German). Hamburg, Berlin, Bonn Germany: Verlag E.S. Mittler & Sohn. ISBN978-3-8132-0515-2.
Fellgiebel, Walther-Peer[in German] (2000) [1986]. Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile [The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches] (in German). Friedberg, Germany: Podzun-Pallas. ISBN978-3-7909-0284-6.
Helgason, Guðmundur. "Ships hit by U-575". German U-boats of WWII - uboat.net. Retrieved 7 April 2015.
Scherzer, Veit (2007). Die Ritterkreuzträger 1939–1945 Die Inhaber des Ritterkreuzes des Eisernen Kreuzes 1939 von Heer, Luftwaffe, Kriegsmarine, Waffen-SS, Volkssturm sowie mit Deutschland verbündeter Streitkräfte nach den Unterlagen des Bundesarchives [The Knight's Cross Bearers 1939–1945 The Holders of the Knight's Cross of the Iron Cross 1939 by Army, Air Force, Navy, Waffen-SS, Volkssturm and Allied Forces with Germany According to the Documents of the Federal Archives] (in German). Jena, Germany: Scherzers Militaer-Verlag. ISBN978-3-938845-17-2.