German submarine U-665
German submarine "U-665" was a Type VIIC U-boat built for Nazi Germany's "Kriegsmarine" for service during World War II. She was laid down on 10 June 1941 by Deutsche Werft, Hamburg as yard number 814, launched on 9 June 1942 and commissioned on 22 July 1942 under "Leutnant zur See" Hans-Jürgen Haupt. Design. German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-665" had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of  , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . "U-665" was fitted with five torpedo tubes (four fitted at  the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and two twin C/30 anti-aircraft guns. 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 22 July 1942, followed by active service on 1 February 1943 as part of the 1st Flotilla for the remainder of her short service. In her sole patrol she sank one merchant ship, for a total of . Wolfpacks. "U-665" took part in three wolfpacks, namely: Fate. "U-665" was missing since 22  March 1943 in the Bay of Biscay, west of La Pallice. Previously recorded fate. "U-665" was sunk on 22 March 1943 in the North Atlantic at , by depth charges from an Armstrong Whitworth Whitley VII of No. 10 Operational Training Unit RAF (10 OTU) (call-sign "Q"), for the loss of all hands.