German submarine U-659

German submarine U-659 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 12 February 1941 by Howaldtswerke, Hamburg as yard number 808, launched on 14 October 1941 and commissioned on 9 December 1941 under Oberleutnant zur See Hans Stock.

Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-659 had a displacement of 769 t when at the surface and 871 t while submerged. She had a total length of 67.10 m, a pressure hull length of 50.50 m, a beam of 6.20 m, a height of 9.60 m, and a draught of 4.74 m. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2800 to 3200 PS for use while surfaced, two Siemens-Schuckert GU 343/38-8 double-acting electric motors producing a total of 750 PS for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 m.

The submarine had a maximum surface speed of 17.7 kn and a maximum submerged speed of 7.6 kn. When submerged, the boat could operate for 80 nmi at 4 kn; when surfaced, she could travel 8500 nmi at 10 kn. U-659 was fitted with five 53.3 cm torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. The boat had a complement of between forty-four and sixty.

Service history
The boat's career began with training at 5th U-boat Flotilla on 9 December 1941, followed by active service on 1 September 1942 as part of the 9th Flotilla for the remainder of her service. In five patrols she sank one merchant ships, for a total of, and damaged three others.

Wolfpacks
U-659 took part in seven wolfpacks, namely
 * Vorwärts (25 August – 11 September 1942)
 * Streitaxt (20–31 October 1942)
 * Spitz (22–29 December 1942)
 * Neptun (18 February – 3 March 1943)
 * Westmark (6–8 March 1943)
 * Neuland (8–13 March 1943)
 * Drossel (29 April – 4 May 1943)

Fate
U-659 sunk on 4 May 1943 in the North Atlantic in position 43.53333°N, -13.33333°W after colliding with GS U-439. There were just 3 survivors, and 44 hands lost.