U-233 was assigned to the 4th U-boat Flotilla for training on 22 September 1943 and to the 12th U-boat Flotilla on 1 June 1944 for active service.
Her first and only patrol commenced on 27 May 1944 when she departed Kiel to lay mines off Halifax.
Fate
On 5 July 1944 U-233 was intercepted by ships of the USS Card (CVE-11) hunter-killer group.
She was identified by sonar, depth-charged to the surface and fired on by USS Baker (DE-190), before being rammed and sunk by USS Thomas (DE-102).
32 of her crew were killed in the action, 29 others being rescued by the escorts. Steen was also picked up, but died of wounds the next day.
[4][5][6] US Navy report on U-233 survivors 1944[7]
Blair, Clay (1 July 2000). Hitler's U-boat War: The Hunted, 1942-45. Weidenfeld & Nicolson. ISBN978-0-304-35261-6.
Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN1-55750-186-6.
Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN3-8132-0514-2.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN0-85177-593-4.
Kemp, Paul (1 March 2000). U-Boats Destroyed: German Submarine Losses in the World Wars. Arms & Armour Press. ISBN978-1-85409-515-2.
Niestlé, Axel (1998). German U-Boat Losses During World War II: Details of Destruction. ISBN978-1-85367-352-8.
External links
Helgason, Guðmundur. "The Type XB boat U-233". German U-boats of WWII - uboat.net. Retrieved 9 January 2010.
Hofmann, Markus. "U 233". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 31 January 2015.