German submarine U-447

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-447
Ordered6 August 1940
Builder Schichau-Werke, Danzig
Yard number1507
Laid down1 July 1941
Launched30 April 1942
Commissioned11 July 1942
FateSunk on 7 May 1943 in the North Atlantic in position 35°30′N11°55′W / 35.500°N 11.917°W / 35.500; -11.917 , by depth charges from RAF Hudson.
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 [1]
Part of:
Identification codes: M 17 865
Commanders:
  • Kptlt. Friedrich-Wilhelm Bothe
  • 11 July 1942 – 7 May 1943
Operations:
  • 2 patrols:
  • 1st patrol:
  • 20 February – 24 March 1943
  • 2nd patrol:
  • 27 April – 7 May 1943
Victories: None

German submarine U-447 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 July 1941 by Schichau-Werke, Danzig as yard number 1507, launched on 30 April 1942 and commissioned on 11 July 1942 under Oberleutnant zur See Friedrich-Wilhelm Bothe.

Contents

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-447 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 AEG GU 460/8-276 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-447 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 a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty. [2]

Service history

The boat's career began with training at 8th U-boat Flotilla on 11 July 1942, followed by active service on 1 March 1943 as part of the 9th Flotilla for the remainder of her service. In 2 patrols she sank no ships. [1]

Wolfpacks

U-447 took part in three wolfpacks, namely:

Fate

U-447 was sunk on 7 May 1943 in the North Atlantic in position 35°30′N11°55′W / 35.500°N 11.917°W / 35.500; -11.917 , by depth charges from 2 RAF Hudson bombers from 233 Squadron. All crew members died. [1]

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References

  1. 1 2 3 Helgason, Guðmundur. "The Type VIIC boat U-447". German U-boats of WWII - uboat.net. Retrieved 15 September 2014.
  2. 1 2 3 4 Gröner 1991, pp. 43–46.

Bibliography