German submarine U-857

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Career (Nazi Germany)
Name: U-857
Ordered: 5 June 1941
Builder: AG Weser, Bremen
Yard number: 1063
Laid down: 16 November 1942
Launched: 25 May 1943
Commissioned: 16 September 1943
Fate: Sank due to unknown causes in April 1945
General characteristics [1]
Type: Type IXC/40 submarine
Displacement: 1,144 t (1,126 long tons) surfaced
1,257 t (1,237 long tons) submerged
Length: 76.76 m (251 ft 10 in) o/a
58.75 m (192 ft 9 in) pressure hull
Beam: 6.86 m (22 ft 6 in) o/a 4.44 m (14 ft 7 in) pressure hull
Height: 9.6 m (31 ft 6 in)
Draft: 4.67 m (15 ft 4 in)
Propulsion: 2 × MAN M 9 V 40/46 supercharged 9-cylinder diesel engines, 4,400 hp (3,281 kW)
2 × SSW GU 345/34 double-acting electric motors, 1,000 hp (746 kW)
Speed: 19 knots (35 km/h; 22 mph) surfaced
7.3 knots (13.5 km/h; 8.4 mph) submerged
Range: 138,500 nmi (256,500 km; 159,400 mi) at 10 knots (19 km/h) surfaced
63 nautical miles (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:

German submarine U-857 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during the Second World War. She was ordered on 5 June 1941, laid down on 16 November 1942, and launched on 25 May 1943. For her operational lifespan, she was commanded by Kapitänleutnant Rudolf Premauer and had a crew complement of 59.

Service History[edit]

She undertook three patrols, the first was for training. She sank two ships for a total tonnage of 15,259 gross register tons (GRT), and damaged one other ship on her last two patrols.[2] She sank Belgian Airman on 14 April 1945, Swiftscout on 18 April 1945 and damaged Katy on 23 April 1945.

Fate[edit]

U-857 went missing in April 1945 in the North Atlantic Ocean off the east coast of the United States. All hands were lost, and no wreckage was found.

The U-boat had been claimed to have been sunk by depth charge hedgehogs off the coast of Massachusetts in April 1945 by USS Gustafson and was also thought to have been possibly sunk by USS Coffman.[3] However more recent commentary surmised that Gustafson had not hit her, and her loss is currently unexplained.[4][5] Her wreck currently lies off of Cape Cod.[6]

Summary of Raiding Career[edit]

Date Ship Name Nationality Tonnage (GRT) Fate[7]
14 April 1945 Belgian Airman  Belgium 6,959 Sunk
18 April 1945 Swiftscout  United States 8,300 Sunk
23 April 1945 Katy  Norway 6,825 Damaged

References[edit]

Notes
  1. ^ Gröner, p. 105-7.
  2. ^ The Type IXC/40 boat U-857 - German U-boats of WWII - uboat.net
  3. ^ Sinking of U 548
  4. ^ Niestlé, Axel "German U-boat Losses During World War II: Details of Destruction" (Annapolis: Naval Institute Press, 1998)
  5. ^ "USCG-U-857". 26 January 2012. Retrieved 19 December 2012. 
  6. ^ http://shipwreck.findthedata.org/l/67/U-857 Ship Wreck Data
  7. ^ "U-857 successes". UBoat.net. Retrieved 13 February 2014. 
Bibliography
  • Gröner, Erich (1985). "U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher". Die deutschen Kriegsschiffe 1815-1945 III (Koblenz: Bernard&Graefe). ISBN 3-7637-4802-4. 


External links[edit]