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German submarine U-552

Bundesarchiv Bild 101II-MW-3676-28, St. Nazaire, Uboot U 552.jpg
Erich Topp (r) on U-552 in St. Nazaire in October 1941
History
Nazi Germany
Name: U-552
Ordered: 25 September 1939
Builder: Blohm & Voss, Hamburg
Yard number: 528
Laid down: 1 December 1939
Launched: 14 September 1940
Commissioned: 4 December 1940
Fate: Scuttled, 2 May 1945, at Wilhelmshaven
General characteristics
Class and 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
Part of:
Identification codes: M 20052
Commanders:
  • K.Kapt. Erich Topp
  • 4 December 1940 — 8 September 1942
  • Kptlt. Klaus Popp
  • 9 September 1942 — 10 July 1944
  • Oblt.z.S. Günther Lube
  • 11 July 1944 — 2 May 1945
Operations: 15 patrols
Victories:
  • 30 ships sunk for a total of 163,756 GRT
  • one auxiliary warship sunk for a total of 520 GRT
  • one warship sunk for a total of 1,190 GRT
  • 3 ships damaged for a total of 26,910 GRT

German submarine U-552 also widely known as the Roter Teufel ("Red Devil") was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 December 1939 at Blohm & Voss in Hamburg as yard number 528, launched on 14 September 1940 and went into service on 4 December 1940. U-552 was nicknamed the Roter Teufel ("Red Devil") after its mascot of a grinning devil which was painted on the conning tower. She was one of the more successful of her class, operating for over three years of continual service and sinking or damaging 30 Allied ships with 164,276 tons sunk and 26,910 tons damaged. She was a member of 21 wolf packs.

U-552 was involved in two controversial actions: in October 1941 she sank the USS Reuben James, the first US Navy warship to be lost in World War II; this was at a time when the US was still officially neutral, and caused a diplomatic row. In April 1942 she sank the freighter SS David H. Atwater off the US seaboard in a particularly brutal attack, characterized as a naval atrocity.

U-552 had an unusually long service life, surviving to the end of World War II; after evacuating from her French base during the spring of 1944 she operated on training duties in the Baltic Sea until 2 May 1945, when her crew scuttled her in Helgoland Bight, to prevent her falling into enemy hands.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-552 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. 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).


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