German submarine U-263 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 8 June 1941 at the Bremer-Vulkan-Vegesacker Werft (yard) in Bremen as yard number 28. She was launched on 18 March 1942 and commissioned on 6 May under the command of Kapitänleutnant Kurt Nölke.
In two patrols, she sank two ships of . She was a member of one wolfpack.
She was sunk on 20 January 1944 in the Bay of Biscay, during a deep dive trial.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-263 had a displacement of 769t when at the surface and 871t while submerged. She had a total length of 67.1m (220.1feet), a pressure hull length of 50.5m (165.7feet), a beam of 6.2m (20.3feet), a height of 9.6m (31.5feet), and a draught of 4.74m (15.55feet). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of NaNPS for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of 750PS for use while submerged. She had two shafts and two 1.23abbr=onNaNabbr=on 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-263 was fitted with five 53.30NaN0 torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.82NaN2 SK C/35 naval gun, 220 rounds, and two twin 2sp=usNaNsp=us C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.
After training with the 8th U-boat Flotilla, the boat became operational on 1 November 1942 when she was transferred to the 1st flotilla.
U-263s first patrol began when she departed Kiel on 27 October 1942. She entered the Atlantic Ocean after negotiating the gap between Iceland and the Faroe Islands. There followed a series of attacks west of Gibraltar, first by the U-boat on two freighters, then on the submarine by surface ships (on 20 November), aircraft (on 24 November) and a submarine (on 26 November), all of which she was lucky to survive. Even so, the damage sustained needed 13 months of repairs. She arrived at La Pallice / La Rochelle in occupied France on 29 November.
The boat departed La Pallice on 19 January 1944. She was sunk the next day in the Bay of Biscay during a deep dive trial.
Fifty-one men died; there were no survivors.
| Date | Ship Name | Nationality | Tonnage (GRT) | Fate[1] | |
|---|---|---|---|---|---|
| 20 November 1942 | Grangepark |  United Kingdom | 5,132 | Sunk | |
| 20 November 1942 |  Norway | 7,244 | Sunk |