German submarine U-559

Last updated

History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-559
Ordered16 October 1939
Builder Blohm & Voss, Hamburg
Yard number535
Laid down1 February 1940
Launched8 January 1941
Commissioned27 February 1941
FateSunk by depth charges on 30 October 1942 [1]
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
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 [2] [3]
Part of:
Identification codes: M 38 782
Commanders:
Operations:
  • 10 patrols:
  • 1st patrol:
  • 4 June – 5 July 1941
  • 2nd patrol:
  • 26 July – 22 August 1941
  • 3rd patrol:
  • 20 September – 20 October 1941
  • 4th patrol:
  • 24 November – 4 December 1941
  • 5th patrol:
  • 8 – 31 December 1941
  • 6th patrol:
  • 16 – 26 February 1942
  • 7th patrol:
  • a. 4 – 21 March 1942
  • b. 24 – 27 March 1942
  • c. 10 – 12 May 1942
  • 8th patrol:
  • a. 18 May – 22 June 1942
  • b. 15 – 21 August 1942
  • 9th patrol:
  • 29 August – 21 September 1942
  • 10th patrol:
  • 29 September – 30 October 1942
Victories:
  • 4 merchant ships sunk
    (11,811  GRT)
  • 1 warship sunk
    (1,060 tons)
  • 2 merchant ships total loss
    (6,117  GRT)

German submarine U-559 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.

Contents

Laid down on 1 February 1940 at the Blohm & Voss shipyards in Hamburg as "Baunummer 535" ("Yard number 535"), she was launched on 8 January 1941 and commissioned on 27 February under Kapitänleutnant Hans Heidtmann.

She began her service career with the 1st U-boat Flotilla, undergoing training before being declared operational on 1 June 1941. She moved to the 29th U-boat Flotilla on 15 April 1942. She sank five ships but is perhaps best remembered for an incident during her sinking in the Mediterranean Sea in 1942, in which British sailors seized cryptographic material from her. This material was extremely valuable in breaking the U-boat Enigma machine cipher.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-559 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. [4] 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). [4]

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). [4] 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-559 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. [4]

Service history

U-559 was originally intended to serve as an Atlantic U-boat during the Battle of the Atlantic against Allied convoys in the Western Approaches.

First and second patrols

Her first patrol took her from Kiel on 4 June 1941, across the North Sea and through the gap between Greenland and Iceland. She arrived at St. Nazaire in occupied France on 5 July.

Her second sortie met with success when she torpedoed and sank the Alva about 600 nautical miles (1,100 km; 690 mi) west of Ushant. She returned to her French base on 22 August 1941.

Third patrol

For her third patrol, beginning on 20 September, she was assigned to the 'Goeben' group, which were the first U-boats to enter the Mediterranean in World War II through the heavily defended Strait of Gibraltar. She reached Salamis in Greece, after having first investigated the Libyan/Egyptian border.

Fourth patrol

On her fourth patrol, she torpedoed and sank the Australian sloop HMAS Parramatta off the Libyan coast; although most survivors were picked up by other ships, three men managed to reach dry land where they were rescued by advancing British troops. [5]

Fifth, sixth and seventh patrols

On her fifth patrol, which began on 8 December 1941, the boat sank Shuntien on the 23rd. Shuntien carried 850 – 1,100 German and Italian prisoners of war. Between 800 and 1,000 people were killed, including at least 700 PoWs. [6]

Her sixth and seventh patrols were both from Salamis to the area of the Libyan coast. They were without success.

Eighth and ninth patrols

Having moved to Pula in Croatia in March 1942, she then sortied on 18 May, and sank the tanker Athene and damaged the oiler Brambleleaf in a convoy attack on 10 June.

Her ninth patrol, however, was without success.

Wolfpacks

U-559 took part in one wolfpack, namely:

Fate

It was her own demise that made her most famous. At about 05:00 on 30 October 1942, U-559 was spotted by a Royal Air Force Sunderland, W from 201 Squadron in position 31°47′N33°24′E / 31.783°N 33.400°E / 31.783; 33.400 , 70 miles north of the Nile Delta. The destroyer HMS Hero was alerted by radio and steamed to intercept her, while the destroyers HMS Petard, Pakenham, Dulverton and Hurworth sailed from Port Said, Egypt. At about 12:34 a Wellesley patrol aircraft, F from 47 Squadron, spotted the periscope of the submerged U-559 and attacked with depth charges. [7] [2] [8]

The destroyer group hunted for the U-boat for 16 hours, constantly depth charging. After dark, U-559, with a cracked pressure hull, unable to maintain level trim and four of her crew dead from explosions and flooding, was forced to the surface. She was close to Petard, which immediately opened fire with her Oerlikon 20 mm cannon. [1] [9]

The German crew hurriedly scrambled overboard without destroying their codebooks or Enigma machine and, crucially, having failed to open all the sea-water vents to scuttle the U-boat properly. Three Royal Navy sailors, Lieutenant Anthony Fasson, Able Seaman Colin Grazier and NAAFI canteen assistant Tommy Brown, then boarded the abandoned submarine. There are differing reports as to how the three British men boarded the U-boat. Some accounts (such as that of Kahn) say that they "swam naked" to U-559, which was sinking, but slowly. [10] Sebag-Montefiore states that they either leapt from Petard or, in Brown's case, from a whaler. They retrieved the U-boat's Enigma key setting sheets with all current settings for the U-boat Enigma network. Two German crew members, rescued from the sea, watched this material being loaded into Petard's whaler but were dissuaded from interfering by an armed guard. Grazier and Fasson were inside the U-boat, attempting to get out, when it foundered; both drowned. [11]

Aftermath

Grazier and Fasson were awarded the George Cross posthumously, Brown was awarded the George Medal. The Victoria Cross was considered but not awarded, for the ostensible reason that their bravery was not "in the face of the enemy". [12] Another consideration may have been that a Victoria Cross would have drawn unwanted attention to the U-boat's capture from German intelligence. It was also discovered that Brown had lied about his age in order to enlist, and was only 16 years old, making him one of the youngest recipients of the George Medal. He was discharged and returned home to North Shields, only to die two years later attempting to rescue his younger sister from a house fire. [13]

The code-book material they retrieved was immensely valuable to the code-breakers at Bletchley Park, who had been unable to read the 4-rotor U-boat Enigma for ten months since its introduction by the German Kriegsmarine at the beginning of 1942. This captured material allowed them to read the cyphers for several weeks, and to break U-boat Enigma thereafter right through to the end of the war.

The recovery was one of several such events (e.g., the earlier capture of U-110), that inspired the fictional account of the submarine capture in the 2000 film U-571 .

Summary of raiding history

DateShip NameNationalityTonnage [Note 1] Fate [14]
19 August 1941 Alva Civil Ensign of the United Kingdom.svg  United Kingdom 1,584Sunk
27 November 1941 HMAS Parramatta Naval Ensign of Australia.svg  Royal Australian Navy 1,060Sunk
23 December 1941 Shuntien Civil Ensign of the United Kingdom.svg  United Kingdom 3,059Sunk
26 December 1941 Warszawa Flag of Poland.svg  Poland 2,487Sunk
10 June 1942 Athene Flag of Norway.svg  Norway 4,681Sunk
10 June 1942 Brambleleaf Civil Ensign of the United Kingdom.svg  United Kingdom 5,917Total loss
12 October 1942 Bringhi Flag of Egypt (1922-1958).svg  Egypt 200Total loss

See also

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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 Kemp 1999, p. 94.
  2. 1 2 Helgason, Guðmundur. "The Type VIIC boat U-559". German U-boats of WWII - uboat.net. Retrieved 26 August 2009.
  3. ↑ Helgason, Guðmundur. "War Patrols by German U-boat U-559". German U-boats of WWII - uboat.net. Retrieved 26 August 2009.
  4. 1 2 3 4 Gröner 1991, pp. 43–46.
  5. ↑ Paterson, Lawrence - U-Boats in the Mediterranean 1941-1944, 2007, Chatham Publishing, ISBN   9781861762900, p. 43.
  6. ↑ Helgason, Guðmundur. "Ships hit by U-559". German U-boats of WWII - uboat.net. Retrieved 28 December 2014.
  7. ↑ Busch & Röll 1999, pp. 63–64.
  8. ↑ Shores et al. 2012 , pp. 612–613
  9. ↑ West, Nigel (1986). GCHQ : The Secret Wireless War 1900-1986 (1987 ed.). Coronet. pp. 270–271. ISBN   0-340-41197-X.
  10. ↑ Kahn, David Seizing The Enigma: The Race to Break The German U-boat Codes, 1939-1943. 1991. p. 224. Souvenir Press ISBN   0-285-63066-0
  11. ↑ Sebag-Montefiore, Hugh (2001). Enigma; the battle for the Code. London: Phoenix. pp. 259–262. ISBN   0-7538-1130-8.
  12. ↑ Kahn, p. 226.
  13. ↑ West, Nigel (1986). GCHQ : The Secret Wireless War 1900-1986 (1987 ed.). Coronet. p. 272. ISBN   0-340-41197-X.
  14. ↑ Helgason, Guðmundur. "Ships hit by U-559". German U-boats of WWII - uboat.net. Retrieved 30 October 2020.

Bibliography

32°30′N33°0′E / 32.500°N 33.000°E / 32.500; 33.000

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