German submarine U-2503

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-2503
Ordered6 November 1943
Builder Blohm & Voss, Hamburg
Yard number2503
Laid down2 May 1944
Launched29 June 1944
Commissioned1 August 1944
FateScuttled on 4 May 1945
General characteristics
Class and type Type XXI submarine
Displacement
  • 1,621  t (1,595 long tons) surfaced
  • 2,100 t (2,067 long tons) submerged
Length76.70 m (251 ft 8 in) (o/a)
Beam8 m (26 ft 3 in)
Height11.30 m (37 ft 1 in)
Draught6.32 m (20 ft 9 in)
Propulsion
Speed
  • Surfaced:
  • 15.6 knots (28.9 km/h; 18.0 mph) (diesel)
  • 17.9 knots (33.2 km/h; 20.6 mph) (electric)
  • Submerged:
  • 17.2 knots (31.9 km/h; 19.8 mph) (electric)
  • 6.1 knots (11.3 km/h; 7.0 mph) (silent running motors)
Range
  • 15,500 nmi (28,700 km; 17,800 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 340 nmi (630 km; 390 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth240 m (790 ft)
Complement5 officers, 52 enlisted
Sensors and
processing systems
Armament
Service record
Part of:
Identification codes: M 41 704
Commanders:
  • Oblt.z.S. Raimund Tiesler [1]
  • 1 August – 25 October 1944
  • Kptlt. Richard Becker [2]
  • 26 October – 11 November 1944
  • Kptlt. Karl-Jürg Wächter [3]
  • 12 November 1944 – 4 May 1945
Operations: None
Victories: None

German submarine U-2503 was a Type XXI U-boat (one of the " Elektroboote ") of Nazi Germany's Kriegsmarine , built for service in World War II. She was ordered on 6 November 1943, and was laid down on 2 May 1944 at the Blohm & Voss, Hamburg, as yard number 2503. She was launched on 29 June 1944, and commissioned under the command of Oberleutnant zur See Raimund Tiesler on 1 August 1944 . [4]

Contents

Design

Like all Type XXI U-boats, U-2503 had a displacement of 1,621 tonnes (1,595 long tons) when at the surface and 1,819 tonnes (1,790 long tons) while submerged. She had a total length of 76.70 m (251 ft 8 in) (o/a), a beam of 8 m (26 ft 3 in), and a draught of 6.32 m (20 ft 9 in). [5] The submarine was powered by two MAN SE supercharged six-cylinder M6V40/46KBB diesel engines each providing 4,000 metric horsepower (2,900 kilowatts ; 3,900 shaft horsepower ), two Siemens-Schuckert GU365/30 double-acting electric motors each providing 5,000 PS (3,700 kW; 4,900 shp), and two Siemens-Schuckert silent running GV232/28 electric motors each providing 226 PS (166 kW; 223 shp). [5]

The submarine had a maximum surface speed of 15.6 knots (28.9 km/h; 18.0 mph) and a submerged speed of 17.2 knots (31.9 km/h; 19.8 mph). When running on silent motors the boat could operate at a speed of 6.1 knots (11.3 km/h; 7.0 mph). When submerged, the boat could operate at 5 knots (9.3 km/h; 5.8 mph) for 340 nautical miles (630 km; 390 mi); when surfaced, she could travel 15,500 nautical miles (28,700 km; 17,800 mi) at 10 knots (19 km/h; 12 mph). [5] U-2503 was fitted with six 53.3 cm (21.0 in) torpedo tubes in the bow and four 2 cm (0.79 in) C/30 anti-aircraft guns. She could carry twenty-three torpedoes or seventeen torpedoes and twelve mines. The complement was five officers and fifty-two men. [5]

Fate

On 3 May 1945, while on her way to Norway, U-2503 was in the Great Belt, near the Ömo Light Tower, when she was caught and attacked on the surface by Royal Air Force (RAF) Bristol Beaufighters of 236 Squadron and 254 Squadron, part of the Banff Strike Wing. U-2503 was struck in the area of the conning tower by at least one rocket, which caused severe damage and killed several crewmen and Kapitänleutnant Karl-Jürg Wächter. U-2503, burning badly, was beached off of Omø, with 13 dead and an unknown number of survivors. The remaining crew landed ashore and scuttled the boat with explosives the next day.

U-2503's location when scuttled, 55°09′N11°08′E / 55.150°N 11.133°E / 55.150; 11.133 .

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References

  1. ↑ Helgason, Guðmundur. "Raimund Tiesler". Uboat.net. Retrieved 20 April 2016.
  2. ↑ Helgason, Guðmundur. "Richard Becker". Uboat.net. Retrieved 20 April 2016.
  3. ↑ Helgason, Guðmundur. "Karl-Jürg Wächter". Uboat.net. Retrieved 20 April 2016.
  4. ↑ Helgason, Guðmundur. "U-2503". German U-boats of WWII - uboat.net. Retrieved 20 April 2016.
  5. 1 2 3 4 Gröner 1991, p. 85.

Bibliography

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