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German submarineU-612

Coordinates:54°11′00″N12°05′00″E / 54.1833°N 12.0833°E /54.1833; 12.0833
From Wikipedia, the free encyclopedia
German World War II submarine
History
Nazi Germany
NameU-612
Ordered15 August 1940[1]
BuilderBlohm & Voss, Hamburg
Yard number588
Laid down21 April 1941
Launched9 January 1942
Commissioned5 March 1942[2]
Recommissioned31 May 1943
Fate
  • Rammed and sunk byU-444 on 6 August 1942
  • Scuttled on 1 May 1945
General characteristics
Class & typeType VIICsubmarine
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
  • 17.7knots (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 42 940
Commanders:
  • Kptlt. Paul Siegmann
  • 5 March – 6 August 1942
  • Oblt.z.S. Theodor Petersen
  • 31 May 1943 – 20 February 1944
  • Oblt.z.S. Hans-Peter Dick
  • 21 February 1944 – 1 May 1945
Operations:None
Victories:None

German submarineU-612 was aType VIICU-boat built forNazi Germany'sKriegsmarine for service duringWorld War II. She was ordered on 15 August 1940 andlaid down atBlohm & Voss,Hamburg, on 21 April 1941. She waslaunched on 9 January 1942 andcommissioned 5 March 1942[3]Oberleutnant zur See Paul Siegmann was her first commanding officer. He was joined in May 1942 byHerbert Werner, author of the bookIron Coffins, as First Officer.[4]

While still on trials in the BalticU-612 was sunk in collision withU-444 on 6 August 1942. She was later salvaged and served as a training boat until the end of the war, when she was scuttled on 1 May 1945.

Design

[edit]

German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-612 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[5] She had a total length of 67.10 m (220 ft 2 in), apressure hull length of 50.50 m (165 ft 8 in), abeam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and adraught of 4.74 m (15 ft 7 in). The submarine was powered by twoGermaniawerft F46 four-stroke, six-cylindersuperchargeddiesel 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, twoBrown, Boveri & Cie GG UB 720/8double-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).[5]

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).[5] 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-612 was fitted with five 53.3 cm (21 in)torpedo tubes (four fitted at the bow and one at the stern), fourteentorpedoes, one8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a2 cm (0.79 in) C/30 anti-aircraft gun. The boat had acomplement of between forty-four and sixty.[5]

Service history

[edit]

After commissioning,U-612 was engaged in working up and sea trials in the easternBaltic, assigned to5th U-boat Flotilla and based atKönigsberg. On 6 August 1942 she was at sea offDanzig when she was accidentally rammed byU-444.[2][6][7] Werner describes the event in his book; he states neither boat was aware of the other and that the captain ofU-444 was unaware he had struckU-612.[8] He describes in detail the struggle to get out of the rapidly sinking U-boat, and the crew's rescue by two other U-boats, one of which he states was the haplessU-444[9] Two men died in the incident.[3][10]

Siegman and his crew undertook to salvageU-612 and put her back into action; the hull was raised during August but found to be too water-damaged for them to continue. The U-boat was handed over to the dockyard at Danzig and Seigmann and his crew were reassigned to another boat,U-230.[11]

U-612 completed repairs the following year and was re-commissioned 31 May 1943. However she was deemed unsuitable as a "Front-boat" and was confined to training in the Baltic. On commissioning, under Oblt. T Petersen she joined24 Flotilla, a training unit. In February 1944 she joined31 Flotilla, another training unit, under the command ofOblt.z.S. HP Dick.[3]

On 1 May 1945 she was caught atWarnemünde by the advancing Red Army and was scuttled to avoid seizure.[2][3]

References

[edit]
  1. ^Neistle p27
  2. ^abcNeistle p75
  3. ^abcdHelgason, Guðmundur."The Type VIIC Uboat U-612".German U-boats of WWII - uboat.net. Retrieved29 December 2014.
  4. ^Werner p73
  5. ^abcdGröner 1991, pp. 43–46.
  6. ^Blair p619
  7. ^Kemp p86
  8. ^Werner p77
  9. ^Werner p75-7
  10. ^Neistle and Kemp both give one casualty only
  11. ^Helgason, Guðmundur."P Seigmann".German U-boats of WWII - uboat.net. Retrieved29 December 2014.

Sources

[edit]

Bibliography

[edit]
  • Busch, Rainer; Röll, Hans-Joachim (1999).German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press.ISBN 1-55750-186-6.
  • Busch, Rainer; Röll, Hans-Joachim (1999).Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler.ISBN 3-8132-0514-2.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991).German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press.ISBN 0-85177-593-4.

External links

[edit]
Type VIIA
Type VIIB
Type VIIC
Type VIIC/41
Type VIID
Type VIIF
Shipwrecks and maritime incidents in August 1942
Shipwrecks
Other incidents
Shipwrecks and maritime incidents in May 1945
Shipwrecks
Other incidents

54°11′00″N12°05′00″E / 54.1833°N 12.0833°E /54.1833; 12.0833

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