German submarine U-641

German submarine U-641 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 19 November 1942 by Blohm & Voss, Hamburg as yard number 617, launched on 6 August 1942 and commissioned on 24 September 1942 under Oberleutnant zur See Horst Rendtel.

Service History
The boat's short service career began on 24 September 1942 for training with 5th U-boat Flotilla, followed by active service on 1 March 1943 as part of the 7th U-boat Flotilla. It ended ten months later when she was sunk in the North Atlantic.

In four patrols she sank no ships.

Wolf Packs
U-641 took part in thirteen wolfpacks, namely
 * Neuland (4–6 March 1943)
 * Ostmark (6–11 March 1943)
 * Stürmer (11–20 March 1943)
 * Seewolf (21–30 March 1943)
 * Mosel (19–24 May 1943)
 * Trutz (1–16 June 1943)
 * Trutz 2 (16–29 June 1943)
 * Geier 1 (30 June - 14 July 1943)
 * Leuthen (15–24 September 1943)
 * Rossbach (24 September - 9 October 1943)
 * Borkum (18 December 1943 - 3 January 1944)
 * Borkum 2 (3–13 January 1944)
 * Rügen (13–19 January 1944)

Fate
U-641 was sunk on 19 January 1944 in the North Atlantic in position 50.41667°N, -18.81667°W; depth charged by Royal Navy corvette HMS Violet (K35). There were no survivors.