German submarine U-825

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-825
Ordered8 June 1942
Builder Schichau-Werke, Danzig
Yard number1588
Laid down19 July 1943
Launched16 February 1944
Commissioned4 May 1944
Fate
General characteristics
Class and 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
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 codes: M 19 192
Commanders:
Operations:
  • 2 patrols:
  • 1st patrol:
  • 29 December 1944 – 18 February 1945
  • 2nd patrol:
  • 1 April – 13 May 1945
Victories:
  • 1 merchant ship damaged
    (7,198  GRT)
  • 1 merchant ship total loss
    (8,262  GRT)

German submarine U-825 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 19 July 1943 by Schichau-Werke, Danzig as yard number 1588, launched on 16 February 1944 and commissioned on 4 May 1944 under Oberleutnant zur See Gerhard Stoelker.

Contents

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-825 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. [2] 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). [2]

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). [2] 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-825 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), one 3.7 cm (1.5 in) Flak M42 and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty. [2]

Service history

The boat's career began with training at 8th Flotilla on 4 May 1944, followed by active service on 1 December 1944 as part of the 11th Flotilla.

Wolfpacks

U-825 took part in no wolfpacks.

Fate

U-825 surrendered on 13 May 1945 at Loch Eriboll. She was then sunk on 3 January 1946 at 55°31′N07°30′W / 55.517°N 7.500°W / 55.517; -7.500 as part of Operation Deadlight.

Summary of raiding history

DateShip NameNationalityTonnage
(GRT)
Fate [3]
27 January 1945 Solør Flag of Norway.svg  Norway 8,262Total loss
27 January 1945 Ruben Dario Flag of the United States (1912-1959).svg  United States 7,198Damaged

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References

  1. Helgason, Guðmundur. "Gerhard Stoelker". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.
  2. 1 2 3 4 Gröner 1991, pp. 43–46.
  3. Helgason, Guðmundur. "Ships hit by U-825". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.

Bibliography