History
Nazi Germany
Name: U-842
Ordered: 20 January 1941
Builder: DeSchiMAG AG Weser, Bremen
Yard number: 1048
Laid down: 6 April 1942
Launched: 14 November 1942
Commissioned: 1 March 1943
Fate: sunk in North Atlantic, 6 November 1943 at 43°42′N 42°8′W / 43.700°N 42.133°W / 43.700; -42.133Coordinates: 43°42′N 42°8′W / 43.700°N 42.133°W / 43.700; -42.133[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
Height: 9.60 m (31 ft 6 in)
Draught: 4.67 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:
  • 19 knots (35 km/h; 22 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 depth: 230 m (750 ft)
Complement: 4 officers, 44 enlisted
Armament:
Service record
Commanders: Kptlt. Wolfgang Heller
Operations: 1 patrol

German submarine U-842 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

U-842 was ordered in January 1941 from DeSchiMAG AG Weser in Bremen under the yard number 1048. Her keel was laid down on 6 April 1942 and the U-boat was launched on 14 November the same year. She was commissioned into service under the command of Kapitänleutnant Wolfgang Heller (Crew 30) in 4th U-boat Flotilla on 1 March 1943.

Design

German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-842 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-842 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

Transferred to the 2nd U-boat Flotilla, U-842 left Kiel on 14 September 1943 for Bergen where she arrived three days later. On 5 October 1943. U-842 set out for operations in the North Atlantic, where she joined operations against convoy ONS 20. The U-boat escaped an attack by one of the escorts, HMS Bazely (K311) on 17 October unscathed, joining group Siegfried operating against convoy HX 262 on 23 October, and group Siegfried 3 on 26 October. In the final days of October, she was part of group Jahn off Newfoundland. In early November U-842 was among the U-boats of group Tirpitz attacking convoy HX 264, when she was spotted and attacked by an aircraft in the early afternoon of 6 November 1943. Escort Group 2, consisting of Wild Goose, Magpie, and Starling, attacked the U-boat two hours later, and after more than one hour, U-842 was sunk by depth charges from Wild Goose, there were no survivors.[3]

References

  1. ^ Kemp 1999, p. 156.
  2. ^ a b c d Gröner 1991, p. 68.
  3. ^ Busch, Röll 1999, pp. 167.

Bibliography

  • Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN 1-55750-186-6.
  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Kemp, Paul (1999). U-Boats Destroyed - German Submarine Losses in the World Wars. London: Arms & Armour. ISBN 1-85409-515-3.

External links

  • Helgason, Guðmundur. "The Type IXC/40 boat U-842". German U-boats of WWII - uboat.net. Retrieved 2 February 2015.