German submarine U-671

German submarine U-671 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 5 December 1941 at the Howaldtswerke yard at Hamburg, launched on 15 December 1942, and commissioned on 3 March 1943 under the command of Oberleutnant zur See August-Wilhelm hewicker.

Attached to 5th U-boat Flotilla based at Kiel, U-671 completed her training period on 30 April 1944 and was assigned to front-line service.

Service history
On the second and last war patrol, U-671 was detected by two British warships in the English Channel south of Brighton in the early hours of 4 August 1944. HMS Stayner attacked with depth charges and hedgehogs causing severe damage to the U-boat. Stayner was later joined by HMS Wensleydale. Repeated attacks resulted in an oil spill and a number of survivors appeared at the surface. Of the crew of 52 all but five perished in the attack.