German submarine U-660
German submarine U-660 was a [German German Type VIIC submarine|Type VIIC submarine|Type VIIC] U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
She was laid down on 15 February 1941 by Howaldtswerke, Hamburg as yard number 809, launched on 17 November 1941 and commissioned on 8 January 1942 under Oberleutnant zur See Götz Baur.
Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-660 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-660 was fitted with five torpedo tubes, fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and a C/30 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 8 January 1942, followed by active service on 1 August 1942 as part of the 9th Flotilla. Later, on 1 November 1942, she transferred to operations in the Mediterranean with 29th Flotilla where she served for the remainder of her service.In 3 patrols she sank 2 merchant ships, for a total of, and damaged 2 others.