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German submarine U-434
Career
Name: U-434
Ordered: 23 September 1939
Builder: Schichau-Werke, Danzig
Yard number: 1475
Laid down: 20 January 1940
Launched: 15 March 1941
Commissioned: 21 June 1941
Fate: Sunk, 18 December 1941
General characteristics
Type: Type VIIC submarine
Displacement: 769 tonnes (757 long tons) surfaced
871 t (857 long tons) submerged
Length: 67.1 m (220 ft 2 in) o/a
50.5 m (165 ft 8 in) pressure hull
Beam: 6.2 m (20 ft 4 in) o/a
4.7 m (15 ft 5 in) pressure hull
Draft: 4.74 m (15 ft 7 in)
Propulsion: 2 × supercharged Germaniawerft 6-cylinder 4-stroke M6V 40/46 diesel engines, totalling 2,800–3,200 bhp (2,100–2,400 kW). Max rpm: 470-490
2 × electric motors, totalling 750 shp (560 kW) and max rpm: 296
Speed: 17.7 knots (20.4 mph; 32.8 km/h) surfaced
7.6 knots (8.7 mph; 14.1 km/h) submerged
Range: 15,170 km (8,190 nmi) at 10 kn (19 km/h) surfaced
150 km (81 nmi) at 4 kn (7.4 km/h) submerged
Test depth: 230 m (750 ft)
Crush depth: 250–295 m (820–968 ft)
Complement: 44–52 officers & ratings
Armament: • 5 × 533 mm (21 in) torpedo tubes (4 bow, 1 stern)
• 14 × torpedoes or 26 TMA mines
• 1 × C35 88mm gun/L45 deck gun (220 rounds)
• Various AA guns
Service record
Part of: 7th U-boat Flotilla
(21 June–18 December 1941)
Commanders: Kapitänleutnant z.S. Wolfgang Heyda
(21 June–18 December 1941)
Operations: 1st patrol: 2 November–18 December 1941
Victories: None

German submarine U-434 was a Type VIIC U-boat of the German Kriegsmarine during World War II.

The U-boat was laid down on 20 January 1940 at the Schichau-Werke yard, Danzig, launched on 15 March 1941, and commissioned on 21 June 1941, Kapitänleutnant Wolfgang Heyda commanding.[1]

U-434 sailed from Kristiansand, Norway on 2 November 1941, on her first and only war patrol. On 18 December, U-434 was sunk in the North Atlantic north of Madeira, Portugal, in position 36.15N, 15.48W. The U-boat was forced to the surface by depth charges from the British escort destroyer HMS Blankney and the destroyer HMS Stanley. There were 2 dead and 42 survivors.

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Coordinates: 36°15′N 15°48′W / 36.25°N 15.8°W / 36.25; -15.8

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