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German submarine U-871
Career (Nazi Germany)
Name: U-871
Ordered: 25 August 1941
Builder: DeSchiMAG AG Weser, Bremen
Yard number: 1079
Laid down: 14 November 1942
Launched: 7 September 1943
Commissioned: 15 January 1944
Fate: Sunk on 26 September 1944
General characteristics
Class & type: Type IXD2 submarine
Displacement:
  • 1,610 t (1,580 long tons) surfaced
  • 1,799 t (1,771 long tons) submerged
Length:
  • 87.58 m (287 ft 4 in) o/a
  • 68.50 m (224 ft 9 in) pressure hull
  • Beam:
  • 7.50 m (24 ft 7 in) o/a
  • 4.40 m (14 ft 5 in) pressure hull
  • Height: 10.20 m (33 ft 6 in)
    Draught: 5.35 m (17 ft 7 in)
    Installed power:
    • 9,000 PS (6,620 kW; 8,880 bhp) (diesels)
    • 1,000 PS (740 kW; 990 shp) (electric)
    Propulsion:
  • 2 shafts
  • 2 × diesel engines
  • 2 × electric motors
  • Speed:
  • 20.8 knots (38.5 km/h; 23.9 mph) surfaced
  • 6.9 knots (12.8 km/h; 7.9 mph) submerged
  • Range:
  • 12,750 nmi (23,610 km; 14,670 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 57 nmi (106 km; 66 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
  • Test depth: 230 m (750 ft)
    Complement: 66
    Armament:
    Service record
    Part of:
    Commanders:
    • Kptlt. Erwin Ganzer[2]
    • 15 January 1944 – 26 September 1944
    Operations: 1 patrol
    Victories: None

    German submarine U-871 was a long-range Type IXD2 U-boat built for Nazi Germany's Kriegsmarine during World War II.

    She was ordered on 25 August 1941, and was laid down on 14 November 1942 at DeSchiMAG AG Weser, Bremen, as yard number 1079. She was launched on 7 September 1943 and commissioned under the command of Kapitänleutnant Erwin Ganzer on 15 January 1944.[3]

    Design[edit | edit source]

    German Type IXD2 submarines were considerably larger than the original Type IXs. U-871 had a displacement of 1,610 tonnes (1,580 long tons) when at the surface and 1,799 tonnes (1,771 long tons) while submerged.[4] The U-boat had a total length of 87.58 m (287 ft 4 in), a pressure hull length of 68.50 m (224 ft 9 in), a beam of 7.50 m (24 ft 7 in), a height of 10.20 m (33 ft 6 in), and a draught of 5.35 m (17 ft 7 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of 9,000 metric horsepower (6,620 kW; 8,880 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 1.85 m (6 ft) propellers. The boat was capable of operating at depths of up to 200 metres (660 ft).[4]

    The submarine had a maximum surface speed of 20.8 knots (38.5 km/h; 23.9 mph) and a maximum submerged speed of 6.9 knots (12.8 km/h; 7.9 mph).[4] When submerged, the boat could operate for 121 nautical miles (224 km; 139 mi) at 2 knots (3.7 km/h; 2.3 mph); when surfaced, she could travel 12,750 nautical miles (23,610 km; 14,670 mi) at 10 knots (19 km/h; 12 mph). U-871 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 24 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 150 rounds, and a 3.7 cm (1.5 in) with 2575 rounds as well as two 2 cm (0.79 in) anti-aircraft guns with 8100 rounds. The boat had a complement of fifty-five.[4]

    Service history[edit | edit source]

    U-871 was sunk by depth charges northwest of the Azores, by a British B-17 Flying Fortress of 220 Squadron/P RAF. All 69 of her crew were lost.[3]

    The wreck lies at 43°18′N 36°28′W / 43.3°N 36.467°W / 43.3; -36.467Coordinates: 43°18′N 36°28′W / 43.3°N 36.467°W / 43.3; -36.467.[3]

    References[edit | edit source]

    1. Busch & Röll 1997, p. 384.
    2. Helgason, Guðmundur. "Erwin Ganzer". http://uboat.net/men/commanders/338.html. Retrieved 12 April 2016. 
    3. 3.0 3.1 3.2 Helgason, Guðmundur. "U-871". http://uboat.net/boats/u871.htm. Retrieved 12 April 2016. 
    4. 4.0 4.1 4.2 4.3 Gröner 1991, pp. 74-75.

    Bibliography[edit | edit source]

    • Busch, Rainer; Röll, Hans-Joachim (1997) (in German). Der U-Boot-Bau auf deutschen Werften. II. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0509-6. 
    • Busch, Rainer; Röll, Hans-Joachim (1999) (in German). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2. 
    • Gröner, ErichExpression error: Unexpected < operator. (1991). U-boats and Mine Warfare Vessels. 2. London: Conway Maritime Press. ISBN 0-85177-593-4. 
    • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9. 

    External links[edit | edit source]



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