German submarine U-628

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History
Nazi Germany
Name: U-628
Ordered: 15 August 1940
Builder: Blohm & Voss, Hamburg
Yard number: 604
Laid down: 7 August 1941
Launched: 29 April 1942
Commissioned: 25 June 1942
Fate: Sunk 3 July 1943 in the North Atlantic NW of Cape Ortegal in position Lua error in package.lua at line 80: module 'strict' not found., by depth charges from a RAF Liberator aircraft of 224/J Squadron.
General characteristics
Class & type: Type VIIC submarine
Displacement:
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
Length:
Beam:
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height: 9.60 m (31 ft 6 in)
Draught: 4.74 m (15 ft 7 in)
Installed power:
  • 2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels)
  • 750 PS (550 kW; 740 shp) (electric)
Propulsion:
Speed:
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range:
  • 8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth:
  • 230 m (750 ft)
  • Crush depth: 250–295 m (820–968 ft)
Complement: 4 officers, 40–56 enlisted
Armament:
Service record[1]
Part of:
Commanders:
  • Kptlt. Heinrich Hasenschar
  • 25 June 1942 – 3 July 1943
Operations:
  • 1st patrol: 28 November 1942 – 8 January 1943
  • 2nd patrol: 1 February – 9 March 1943
  • 3rd patrol: 8 April – 19 May 1943
  • 4th patrol: 1–3 July 1943
Victories:
  • 4 merchant ships sunk (21,896 GRT)
  • 4 merchant ships damaged (25,531 GRT)

German submarine U-628 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 7 August 1941 by Blohm & Voss, Hamburg as yard number 604, launched on 29 April 1942 and commissioned on 25 June 1942 under Kapitänleutnant Heinrich Hasenschar.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-628 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[2] She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Brown, Boveri & Cie GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).[2]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).[2] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-628 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. The boat had a complement of between forty-four and sixty.[2]

Service history

The boat's service began on 25 June 1942 with training as part of the 5th U-boat Flotilla. She was transferred to the 1st Flotilla on 1 December 1942 for active service in the North Atlantic.

In four patrols she sank four merchant ships, for a total of 21,765 gross register tons (GRT), plus three merchant ships damaged.

Wolfpacks

U-628 took part in six wolfpacks, namely

  • Ungestüm (11–30 December 1942)
  • Hartherz (3–7 February 1943)
  • Ritter (11–26 February 1943)
  • No Name (15–18 April 1943)
  • Specht (19 April – 4 May 1943)
  • Fink (4–6 May 1943)

Fate

U-628 was sunk on 3 July 1943 in the North Atlantic NW of Cape Ortegal in position Lua error in package.lua at line 80: module 'strict' not found.; bombed and depth charged by RAF Liberator aircraft (FL963) of 224/J Squadron out of RAF St Eval in Cornwall. All 49 hands were lost.

Summary of raiding history

Date Name Nationality Tonnage
(GRT)		 Fate[3]
29 December 1942 Lynton Grange  United Kingdom 5,029 Sunk
23 February 1943 Glittre  Norway 6,409 Damaged
23 February 1943 Winkler  Panama 6,907 Damaged
24 February 1943 Ingria  Norway 4,391 Sunk
25 February 1943 Manchester Merchant  United Kingdom 7,264 Sunk
17 April 1943 Fort Rampart  United Kingdom 7,134 Damaged
5 May 1943 Harbury  United Kingdom 5,081 Damaged
5 May 1943 Wentworth  United Kingdom 5,212 Sunk

References

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Bibliography

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External links

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  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 2.2 2.3 Gröner 1991, pp. 43-46.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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