German submarine U-647

German submarine U-647 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 29 December 1941 at the Blohm & Voss yard at Hamburg, launched on 16 September 1942, and commissioned on 5 November 1942 under the command of Kapitänleutnant Willi Hertin.

Attached to 5th U-boat Flotilla based at Kiel, U-647 completed her training period on 31 March 1943 and was assigned to front-line service.

Service history
On the first and only war patrol U-647 was last heard of on 28 July 1943 and declared missing on 3 August 1943.