|Ordered||25 Aug 1941|
|Laid down||14 Nov 1942||AG Weser, Bremen (werk 1079)|
|Launched||7 Sep 1943|
|Commissioned||15 Jan 1944||Kptlt. Erwin Ganzer|
|Successes||No ships sunk or damaged|
Sunk 26 Sept, 1944 north-west of the Azores, in position 43.18N, 36.28W, by depth charges from a British B-17 Fortress aircraft (Sqdn 220/P). 69 dead (all hands lost).
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-871 did not suffer any casualties (we know of) until the time of her loss.