German submarine U-734

German submarine U-734 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 20 October 1941 by Schichau-Werke, Danzig as yard number 1525, launched on 19 September 1942 and commissioned on 5 December 1942 under Oberleutnant zur See Hans-Jörg Blauert.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-734 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 AEG GU 460/8–27 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-734 was fitted with five torpedo tubes, 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.

The boat's career began with training at 8th U-boat Flotilla on 5 December 1942, followed by active service on 1 August 1943 as part of the 3rd Flotilla for the remainder of her service.
In two patrols she sank no ships.

U-734 took part in three wolfpacks, namely:

U-734 was sunk on 9 February 1944 in the North Atlantic, southwest of Ireland, at position, by depth charges from the Royal Navy sloops and. All hands were lost.