|Ordered||14 Feb 1940|
|Laid down||4 Aug 1941||Deutsche Werft AG, Hamburg (werk 338)|
|Launched||15 Apr 1942|
|Commissioned||25 Jun 1942||Oblt. Werner Pietzsch|
|Successes||1 ship sunk, total tonnage 5,848 GRT|
Sunk on 25 August 1943 in the North Atlantic west of Vigo, Spain, in position 42.03N, 18.02W, by depth charges from the British destroyer HMS Wanderer and the British corvette HMS Wallflower. 17 dead and 37 survivors.
U-523 operated with the following Wolfpacks during its career:
Burggraf (24 Feb 1943 - 5 Mar 1943)
Westmark (6 Mar 1943 - 11 Mar 1943)
Stürmer (11 Mar 1943 - 20 Mar 1943)
Seeteufel (23 Mar 1943 - 30 Mar 1943)
Attacks on this boat and other events
24 May 1943
11.22 hrs, Bay of Biscay, outbound: six bombs from a British Whitley bomber (10 OTU RAF/J, pilot Sgt C.S. Chatton) caused severe damage and the boat was forced to return to base at Lorient. (Sources: Norman Franks)
1 recorded attack on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-523 did not suffer any casualties (we know of) until the time of her loss.
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