|Ordered||7 Dec 1940|
|Laid down||4 Sep 1941||H C Stülcken Sohn, Hamburg (werk 778)|
|Launched||10 Aug 1942|
|Commissioned||5 Nov 1942||Oblt. Walter Pietschmann|
|Successes||No ships sunk or damaged|
Surrendered at Kristiansand-Süd, Norway on 9 May 1945.
Transferred to Loch Ryan, Scotland. Used for tests by the British and broken up at Hayle in 1950.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-712 did not suffer any casualties (we know of) until the time of her loss.