German submarine U-870

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Career (Nazi Germany)
Name: U-870
Ordered: 25 August 1941
Builder: DeSchiMAG AG Weser, Bremen
Yard number: 1078
Laid down: 29 April 1943
Launched: 29 October 1943
Commissioned: 3 February 1944
Fate: Sunk on 30 March 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: 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[2]
Part of: 4th U-boat Flotilla
(3 February 1944 - 30 September 1944) - Training
33rd U-boat Flotilla
(1 October 1944 - 30 March 1945)
Commanders: K.Kapt. Ernst Hechler
(3 February 1944 - 30 March 1945)
Operations: 1st patrol:
10 November 1944 – 20 February 1945
Victories: 2 merchant ships sunk (11,844 GRT)
2 warships sunk (1,960 tons)
1 warship damaged (1,400 tons)

German submarine U-870 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during the Second World War. She was ordered on 25 August 1941, and laid down on 29 April 1943 at Bremen in Germany. She was launched on 29 October 1943 and commissioned on 3 February 1944.

Service History[edit]

For her two patrols, she had one commander, Korvettenkapitän Ernst Hechler, who was awarded the Knight's Cross of the Iron Cross.

Over her career she claimed two warships sunk, total tonnage 1,960 tons, one warship damaged for a total tonnage 1,400 tons, and two ships a total loss, total tonnage 11,844 gross register tons (GRT).[2] On 20 December 1944, U-870 attacked a small group of landing ships, damaging USS Fogg and sinking the 1,625 ton vessel USS LST-359.[3] The U-boat was then attacked by a British aircraft from No. 220 Squadron RAF but got away, also evading two hunter-killer groups of vessels.[2]

Fate[edit]

She was sunk on 30 March 1945 at Bremen by US bombs.[2]

Summary of Raiding Career[edit]

Date Name of Ship Nationality Tonnage Fate
20 December 1944 USS Fogg  United States Navy 1,400 Damaged at 43°02′N 19°19′W / 43.033°N 19.317°W / 43.033; -19.317 (USS Fogg (ship))
20 December 1944 USS LST-359  United States Navy 1,188 Sunk at 42°04′N 19°08′W / 42.067°N 19.133°W / 42.067; -19.133 (USS LST-359 (ship))
3 January 1945 Henry Miller  United States 7,207 Sunk at 35°51′N 06°24′W / 35.850°N 6.400°W / 35.850; -6.400 (Henry Miller (ship))
9 January 1945 FFL L´Enjoue  Free French Naval Forces 335 Sunk at 35°56′N 05°49′W / 35.933°N 5.817°W / 35.933; -5.817 (FFL L´Enjoue (W 44) (ship))
10 January 1945 Blackheath  United Kingdom 4,637 Sunk at 35°49′N 06°03′W / 35.817°N 6.050°W / 35.817; -6.050 (Blackheath (ship))

References[edit]

  1. ^ Gröner 1985, pp. 105-7.
  2. ^ a b c d Helgason, Guðmundur. "The Type IXC/40 boat U-870". German U-boats of WWII - uboat.net. Retrieved 2 February 2015. 
  3. ^ [1][dead link]

Bibliography[edit]

  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) IV (Hamburg, Berlin, Bonn: Mittler). ISBN 3-8132-0514-2. 
  • Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815-1945 (in German) III (Koblenz: Bernard & Graefe). ISBN 3-7637-4802-4. 

External links[edit]