|Ordered||20 Jan 1941|
|Laid down||2 Dec 1941||Howaldtswerke Hamburg AG, Hamburg (werk 820)|
|Launched||15 Dec 1942|
|Commissioned||3 Mar 1943||Oblt. August-Wilhelm Hewicker|
|Successes||No ships sunk or damaged|
Sunk at 0200hrs on 5 Aug 1944 in the English Channel south of Brighton, in position 50.23N, 00.06E, by depth charges from the British frigate HMS Stayner and the British escort destroyer HMS Wensleydale. 47 dead and 5 survivors.
Attacks on this boat and other events
2 Jul 1944
While on the bottom at 203 feet (having been harassed by Allied ASW forces for days) the boat was attacked yet again, this time by a group of "destroyers" but she managed to escape and arrived at Boulogne, France on July 5. (Sources: Blair, vol 2, page 591)
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-671 did not suffer any casualties (we know of) until the time of her loss.