German submarine U-957

Last updated
History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-957
Ordered10 April 1941
Builder Blohm & Voss, Hamburg
Yard number157
Laid down11 March 1942
Launched21 November 1942
Commissioned7 January 1943
Decommissioned21 October 1944
FateProbably scuttled in May 1945
General characteristics
Class & type Type VIIC submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.74 m (15 ft 7 in)
Installed power
  • 2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels)
  • 750 PS (550 kW; 740 shp) (electric)
Propulsion
Speed
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range
  • 8,500  nmi (15,700  km; 9,800  mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth
  • 230 m (750 ft)
  • Crush depth: 250–295 m (820–968 ft)
Complement4 officers, 40–56 enlisted
Armament
Service record
Part of
Identification codesM 50 029
Commanders
Operations
  • 7 patrols:
  • 1st patrol:
  • 14 December 1943 – 12 January 1944
  • 2nd patrol:
  • 24 January – 2 February 1944
  • 3rd patrol:
  • a. 6 – 20 February 1944
  • b. 22 – 25 February 1944
  • 4th patrol:
  • a. 26 February – 4 March 1944
  • b. 29 April – 2 May 1944
  • 5th patrol:
  • a. 11 May – 8 June 1944
  • b. 14 – 15 June 1944
  • c. 23 June 1944
  • d. 26 – 28 June 1944
  • e. 2 – 3 July 1944
  • f. 18 – 20 July 1944
  • 6th patrol:
  • 23 July – 3 September 1944
  • 7th patrol:
  • a. 7 September – 3 October 1944
  • b. 6 – 8 October 1944
  • c. 17 – 21 October 1944
Victories
  • 2 merchant ships sunk
    (7,564  GRT)
  • 2 warships sunk
    (604 tons)

German submarine U-957 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Contents

Laid down by Blohm & Voss, Hamburg on 11 March 1942, the U-boat was launched on 21 November 1942, and commissioned on 7 January 1943, by Oberleutnant zur See Franz Saar.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-957 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. [1] She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Brown, Boveri & Cie GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft). [1]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). [1] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-957 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and one twin 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty. [1]

Service history

Under the command of Oberleutnant zur See Gerhard Schaar U-957 carried out seven war patrols between December 1943 and October 1944, sinking two commercial vessels; the British Fort Bellingham and the Soviet survey vessel Nord; and two military vessels, the American submarine chaser USS PTC-38, and the Soviet corvette Brilliant.

Fate

Her combat career ended on 19 October 1944 at Lofoten, Norway, when she collided with a German steamer. On 21 October 1944 she was taken out of service in Trondheim.

In May 1945, she was probably scuttled in the Skjömenfjord. [2]

Summary of raiding history

DateShip NameNationalityTonnage [Note 1] Fate [3]
26 January 1944 Fort Bellingham Civil Ensign of the United Kingdom.svg United Kingdom 7,153Sunk
26 January 1944 USS PTC-38 Flag of the United States (1912-1959).svg  United States Navy 54Sunk
26 August 1944 Nord Naval Ensign of the Soviet Union (1950-1991).svg  Soviet Navy 411Sunk
23 September 1944 Brilliant Naval Ensign of the Soviet Union (1950-1991).svg  Soviet Navy 550Sunk

References

Notes

  1. Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. 1 2 3 4 Gröner 1991, pp. 43–46.
  2. Helgason, Guðmundur. "The Type VIIC boat U-957". German U-boats of WWII - uboat.net. Retrieved 28 August 2009.
  3. Helgason, Guðmundur. "Ships hit by U-957". German U-boats of WWII - uboat.net. Retrieved 28 August 2009.

Bibliography