German submarine U-553

Last updated

History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-553
Ordered25 September 1939
Builder Blohm & Voss, Hamburg
Yard number529
Laid down21 November 1939
Launched7 November 1940
Commissioned23 December 1940
FateMissing since 20 January 1943.
General characteristics
Class and type Type VIIC submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.74 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)
Complement4 officers, 40–56 enlisted
Armament
Service record
Part of:
Identification codes: M 23 789
Commanders:
Operations:
  • 10 patrols:
  • 1st patrol:
  • 19 April – 2 May 1941
  • 2nd patrol:
  • 7 June – 19 July 1941
  • 3rd patrol:
  • 7 August – 16 September 1941
  • 4th patrol:
  • 7 – 22 October 1941
  • 5th patrol:
  • 1 January – 3 February 1942
  • 6th patrol:
  • 24 February – 1 April 1942
  • 7th patrol:
  • 19 April – 24 June 1942
  • 8th patrol:
  • 19 July – 17 September 1942
  • 9th patrol:
  • 23 November – 18 December 1942
  • 10th patrol:
  • 16 – 20 January 1943
Victories:
  • 12 merchant ships sunk
    (61,390  GRT)
  • 1 warship sunk
    (925 tons)
  • 2 merchant ships damaged
    (15,273  GRT)

German submarine U-553 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.

Contents

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-553 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. [1] 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). [1]

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). [1] 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-553 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 a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty. [1]

Service history

Her keel was laid down 21 November 1939, by Blohm & Voss in Hamburg as yard number 529. She was launched on 7 November 1940 and commissioned on 23 December, with Kapitänleutnant Karl Thurmann in command. He was captain for her entire career.

Her service began with training under the 7th U-boat Flotilla and moved on to operations on 1 April 1941. She then transferred to the 3rd flotilla on 1 December 1942. She was a member of ten wolfpacks. She moved from Kiel in Germany to Bergen in Norway in April 1941.

First patrol

The boat departed Bergen on 19 April 1941 and headed for the Atlantic via the gap between the Faeroe and Shetland Islands. She arrived at her new base of St. Nazaire in occupied France on 2 May 1941 after suffering serious engine trouble.

Second patrol

Departing St. Nazaire on 7 June, she achieved success north of the Azores, by sinking the Susan Maersk (she went down in 90 seconds) [2] and the Ranella (she broke in two) [3] both on 12 June 1941.

Third, fourth and fifth patrols

Her next three sorties met with mixed fortune; her third patrol saw no success, despite ranging far and wide over the north Atlantic.

U-553's next foray saw her attack merchantmen such as the Silvercedar, (sunk on 15 October 1941) [4] and HMS Gladiolus (sunk on 17 October). [5]

The boat's fifth patrol took her toward the eastern Canadian/US coast where she succeeded in damaging the Diala on 15 January 1942 [6] and sinking the Innerøy on 22 January. [7]

Sixth and seventh patrols

The boat's sixth patrol took her from St. Nazaire as far north as the Faeroe Islands. It was unsuccessful.

Outing number seven saw the submarine penetrate the Gulf of St. Lawrence where she sank two ships; the Leto [8] and the Nicoya. [9] The Mattawin [10] was sent to the bottom of the Atlantic.

Eighth patrol

The boat's eighth patrol began with her departure from St. Nazaire on 19 July and to which she returned on 17 September after 61 days at sea, her longest. In that time, she damaged the Belgian Soldier off Newfoundland [11] and attacked three other ships near Cuba. [12] [13] one of which, the Empire Bede, was sunk by gunfire from HMS Pimpernel. [14]

Ninth patrol

Her last full patrol commenced on 23 November 1942; she sank the Charles L D on 9 December 1942. She returned to France, but this time La Pallice on 18 December. [15]

Loss

Her tenth and final sortie began with her departure from La Pallice on 16 January 1943. On the 20th, she sent a radio message: "Sehrohr unklar" (periscope unready for action), and was never heard from again. She had suffered no casualties to her crew until lost with all hands. She most probably sank because of technical problems and was officially declared missing on 28 January 1943. [16]

Wolfpacks

U-553 took part in ten wolfpacks, namely:

Summary of raiding history

DateShip NameNationalityTonnage [Note 1] Fate [17]
12 June 1941 Ranella Flag of Norway.svg  Norway 5,590Sunk
12 June 1941 Susan Maersk Civil Ensign of the United Kingdom.svg  United Kingdom 2,355Sunk
15 October 1941 Ila Flag of Norway.svg  Norway 1,583Sunk
15 October 1941 Silvercedar Civil Ensign of the United Kingdom.svg  United Kingdom 4,354Sunk
17 October 1941 HMS Gladiolus Naval Ensign of the United Kingdom.svg  Royal Navy 925Sunk
15 January 1942 Diala Civil Ensign of the United Kingdom.svg  United Kingdom 8,106Damaged
22 January 1942 Innerøy Flag of Norway.svg  Norway 8,260Sunk
12 May 1942 Leto Flag of the Netherlands.svg  Netherlands 4,712Sunk
12 May 1942 Nicoya Civil Ensign of the United Kingdom.svg  United Kingdom 5,364Sunk
2 June 1942 Matawin Civil Ensign of the United Kingdom.svg  United Kingdom 6,919Sunk
3 August 1942 Belgian Soldier Flag of Belgium (civil).svg  Belgium 7,167Damaged
18 August 1942 Blankaholm Flag of Sweden.svg  Sweden 2,845Sunk
18 August 1942 Empire Bede Civil Ensign of the United Kingdom.svg  United Kingdom 6,959Sunk
18 August 1942 John Hancock Flag of the United States (1912-1959).svg  United States 7,176Sunk
9 December 1942 Charles L D Civil Ensign of the United Kingdom.svg  United Kingdom 5,273Sunk

U-553 in fiction

Neal Stephenson's novel Cryptonomicon includes a fictitious U-553 which runs aground about ten miles north of Qwghlm, a fictional pair of islands, Inner Qwghlm and Outer Qwghlm, off the northwestern coast of Great Britain.

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References

Notes

  1. ↑ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. 1 2 3 4 Gröner 1991, pp. 43–46.
  2. ↑ "Ship Details: Susan Maersk". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  3. ↑ "Ship Details: Ranella". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  4. ↑ "Ship Details: Silvercedar". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  5. ↑ "Ship Details: Gladiolus". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  6. ↑ "Ship Details: Diala". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  7. ↑ "U-553". Ubootwaffe. Archived from the original on 25 February 2012. Retrieved 29 October 2009.
  8. ↑ "Ship Details: Leto". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  9. ↑ "Ship Details: Nicoya". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  10. ↑ "Ship Details: Mattawin". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  11. ↑ "Ship Details: Belgian Soldier". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  12. ↑ "Ship Details: Blankaholm". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  13. ↑ "Ship Details: Empire Bede". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  14. ↑ Helgason, Guðmundur. "Empire Bede". German U-boats of WWII - uboat.net. Retrieved 29 October 2009. (classed as sunk by U-553)
  15. ↑ "Ship Details: Charles L D". Ubootwaffe. Archived from the original on 10 May 2012. Retrieved 29 October 2009.
  16. ↑ Paul Kemp (1998). Die deutschen und österreichischen U-Boot-Verluste in beiden Weltkriegen (in German). Urbes. p. 103. ISBN   978-3-924896-43-0.
  17. ↑ Helgason, Guðmundur. "Ships hit by U-553". German U-boats of WWII - uboat.net. Retrieved 1 February 2014.

Bibliography

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