German submarine U-540

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War ensign of Germany (1938-1945).svg Nazi Germany
NameU-540
Ordered5 June 1941
BuilderDeutsche Werft, Hamburg
Yard number361
Laid down12 May 1942
Launched18 December 1942
Commissioned10 March 1943
FateSunk on 17 October 1943 east of Cape Farewell (Greenland) by two British aircraft [1]
General characteristics
Class and type Type IXC/40 submarine
Displacement
  • 1,144  t (1,126 long tons) surfaced
  • 1,257 t (1,237 long tons) submerged
Length
Beam
  • 6.86 m (22 ft 6 in) o/a
  • 4.44 m (14 ft 7 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.67 m (15 ft 4 in)
Installed power
  • 4,400 PS (3,200 kW; 4,300 bhp) (diesels)
  • 1,000 PS (740 kW; 990 shp) (electric)
Propulsion
Speed
  • 18.3 knots (33.9 km/h; 21.1 mph) surfaced
  • 7.3 knots (13.5 km/h; 8.4 mph) submerged
Range
  • 13,850  nmi (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 63 nmi (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth230 m (750 ft)
Complement4 officers, 44 enlisted
Armament
Service record
Part of:
Identification codes: M 50 445
Commanders:
  • Kptlt. Lorenz Kasch
  • 10 March – 17 October 1943
Operations:
  • 1 patrol:
  • 4 – 17 October 1943
Victories: None

German submarine U-540 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II.

Contents

She was laid down at the Deutsche Werft (yard) in Hamburg as yard number 361 on 12 May 1942, launched on 18 December and commissioned on 10 March 1943 with Kapitänleutnant Lorenz Kasch in command.

U-540 began her service career with training as part of the 4th U-boat Flotilla from 10 March 1943. She was reassigned to the 10th flotilla for operations on 1 October.

She carried out one patrol and did not sink any ships. She was a member of one wolfpack.

She was sunk on 17 October 1943 east of Cape Farewell (Greenland) by British aircraft.

Design

German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-540 had a displacement of 1,144 tonnes (1,126 long tons) when at the surface and 1,257 tonnes (1,237 long tons) while submerged. [2] The U-boat had a total length of 76.76 m (251 ft 10 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.86 m (22 ft 6 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.67 m (15 ft 4 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.92 m (6 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 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph). [2] When submerged, the boat could operate for 63 nautical miles (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 13,850 nautical miles (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph). U-540 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 180 rounds, and a 3.7 cm (1.5 in) SK C/30 as well as a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of forty-eight. [2]

Service history

Patrol and loss

The boat departed Kiel on 11 September 1943, moved through the North Sea, negotiated the gap between Iceland and the Faroe Islands and entered the Atlantic Ocean.

She was sunk on 17 October 1943 east of Cape Farewell (Greenland) by depth charges dropped from two British Liberators of No. 59 Squadron RAF and 120 Squadron.

Fifty-five men died; there were no survivors. [1]

Wolfpacks

U-540 took part in one wolfpack, namely:

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References

  1. 1 2 Kemp 1997, pp. 151–152.
  2. 1 2 3 4 Gröner 1991, p. 68.

Bibliography

58°38′N31°56′W / 58.633°N 31.933°W / 58.633; -31.933

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