|Ordered||7 Dec 1940|
|Laid down||21 Oct 1941||H C Stülcken Sohn, Hamburg (werk 779)|
|Launched||24 Sep 1942|
|Commissioned||29 Dec 1942||Oblt. Henri Gosejacob|
|Successes||No ships sunk or damaged|
Missing since 24 February 1944 in the Norwegian Sea north-west of Narvik. There is no explanation for its loss. 50 dead (all hands lost). (Axel Niestlé, January 2004).
U-713 sent ist last radio message on 24 February 1944 from approx. 69.21N, 03.30E while operating against convoy JW-57 and was posted as missing after repeatedly failing to report its position on 26 February 1944.
Previously recorded fate
Wolfpack operationsSchnorchel and see list of fitted boats.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-713 did not suffer any casualties (we know of) until the time of her loss.