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Career (Nazi Germany)
Name: U-870
Ordered: 25 August 1941
Builder: 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
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General characteristics
Type: Type IXC/40 submarine
Displacement: 1,120 t (1,100 long tons) surfaced
1,232 t (1,213 long tons) submerged
Length: 76.8 m (252 ft 0 in) o/a
58.7 m (192 ft 7 in) pressure hull
Beam: 6.9 m (22 ft 8 in) o/a
4.4 m (14 ft 5 in) pressure hull
Height: 9.6 m (31 ft 6 in)
Draught: 4.7 m (15 ft 5 in)
Propulsion: 2 × MAN M9V40/46 supercharged 9-cylinder diesel engines, 4,400 hp (3,281 kW)
2 × SSW GU345/34 double-acting electric motors, 1,000 hp (746 kW)
Speed: 19 knots (35 km/h) surfaced
7.3 knots (13.5 km/h) submerged
Range: 25,620 nmi (47,450 km) at 10 knots (19 km/h) surfaced
117 nmi (217 km) at 4 kn (7.4 km/h) submerged
Test depth: 230 m (750 ft)
Complement: 48 to 56
Armament: • 6 × torpedo tubes (four bow, two stern)
• 22 × 533 mm (21 in) torpedoes
• 1 × Utof 105 mm/45 deck gun (110 rounds)
• AA guns

German submarine U-870 was a Type IXC/40 U-boat of the Nazi German 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. 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 GRT.[1]

On 20 December 1944, U-870 attacked a small group of landing ships, damaging the USS Fogg and sinking the 1,625 ton vessel USS LST-359.[2] 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.[3]

She was sunk on 30 March 1945 at Bremen by US bombs.[4]

Date Name of Ship Nationality Tonnage Fate
20 December 1944 USS Fogg United States American 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 American 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 American 7,207 sunk at 35°51′N 06°24′W / 35.85°N 6.4°W / 35.85; -6.4 (Henry Miller (ship))
9 January 1945 FFL L´Enjoue (W 44) France French 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 British 4,637 sunk at 35°49′N 06°03′W / 35.817°N 6.05°W / 35.817; -6.05 (Blackheath (ship))

References[]



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