German submarine U-803

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Career (Nazi Germany)
Name: U-803
Ordered: 7 December 1940
Builder: Seebeckwerft, Bremerhaven
Laid down: January 1942
Launched: 1 April 1943
Commissioned: 7 September 1943
Fate: Sunk by a mine, 27 April 1944
General characteristics
Class & 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) overall
58.7 m (192 ft 7 in) pressure hull
Beam: 6.9 m (22 ft 8 in) overall
4.4 m (14 ft 5 in) pressure hull
Height: 9.6 m (31 ft 6 in)
Draft: 4.7 m (15 ft 5 in)
Propulsion: 2 × MAN M9V40/46 supercharged 9-cylinder diesel engines, 4,400 hp (3,300 kW)
2 × SSW GU345/34 double-acting electric motors, 1,000 hp (740 kW)
Speed: 19 knots (35 km/h; 22 mph) surfaced
7.3 knots (13.5 km/h; 8.4 mph) submerged
Range: 25,620 nmi (47,450 km; 29,480 mi) at 10 knots (19 km/h; 12 mph) surfaced
117 nautical miles (217 km; 135 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged
Test depth: 230 m (750 ft)
Complement: 48 to 56
Armament: 6 × 55 cm (22 in) torpedo tubes (4 bow, 2 stern)
22 × torpedoes
1 × Utof 105 mm (4.1 in)/45 deck gun with 110 rounds
Service record
Part of: 4th U-boat Flotilla
Commanders: Kptlt. Karl Schimpf
(July 1943–April 1944)
Operations: None
Victories: None

German submarine U-803 was a German Type IXC/40 U-boat built during World War II at Bremerhaven. This Type had long range cruising capacity and eight torpedo tubes. She was completed in September 1943 and spent the next seven months on working up cruises in the Baltic Sea near Swinemunde in order to get the crew and boat ready for operational cruising in the Battle of the Atlantic, which was at a critical stage.

As the boat worked up on 27 April 1944, just days off its intended first cruise, she struck a sea mine in the bay and sank, nine of her crew going down with the boat, and 35 being rescued by nearby ships. The boat was salvaged in August 1944, but was too badly damaged to repair, and was broken up for components for use in other U-boats. Her surviving crew were largely transferred to other units, principally U-3009, on which they surrendered in May 1945. The mine had been air-dropped over the bay by the Royal Air Force, who had realised the use that the area was being put to through photo-reconnaissance flights. The air-dropping of mines was a frequent tactic of the RAF, and achieved dividends off many German harbours.

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Coordinates: 53°55′N 14°17′E / 53.917°N 14.283°E / 53.917; 14.283