German submarine U-667 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.She was laid down on 16 August 1941 by Deutsche Werft, Hamburg as yard number 816, launched on 29 August 1942 and commissioned on 21 October 1942 under Oberleutnant zur See Heinrich Schroeteler.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-667 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 Siemens-Schuckert GU 343/38-8 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-667 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.
The boat's career began with training at 5th U-boat Flotilla on 21 October 1942, followed by active service on 1 June 1943 as part of the 7th Flotilla for the remainder of her service.
In five patrols she sank one merchant ship, for a total of and 2 warships. She also cause one warship total loss.
U-667 took part in five wolfpacks, namely:
U-667 sunk on 26 August 1944 in the Bay of Biscay in position 46.0667°N -4°W, when she struck a mine. All hands were lost.
| Date | Ship Name | Nationality | Tonnage[1] | Fate[2] | |
|---|---|---|---|---|---|
| 8 August 1944 | Ezra Weston |  United States | 7,176 | Sunk | |
| 8 August 1944 | 925 | Sunk | |||
| 14 August 1944 | USS LST-921 | 1,653 | Total loss | ||
| 14 August 1944 | HMS LCI(L)-99 | 246 | Sunk |