German submarine U-490

The U.S. Navy destroyer escort USS Inch (DE-146) with prisoners from German submarine U-490 (center, two wearing life vests, one in shirtsleeves) on her quarter deck, awaiting transfer to the escort carrier USS Croatan (CVE-25), 12 June 1944. U-490 had been sunk the previous night. Note the K-guns with fast-sinking streamlined depth charges mounted on the ship's side, 3/50 dual-purpose gun in upper left, photographer and guard with a Thompson submachine gun (both at right).

History
Nazi Germany
Name	U-490
Ordered	17 July 1941
Builder	Germaniawerft, Kiel
Yard number	559
Laid down	21 February 1942
Launched	24 December 1942
Commissioned	27 March 1943
Fate	Sunk on 12 June 1944 [1]
General characteristics
Class & type	Type XIV ocean-going submarine tanker
Displacement	1,688  t (1,661 long tons) surfaced 1,932 t (1,901 long tons) submerged
Length	67.10  m (220  ft 2  in) o/a 48.51 m (159 ft 2 in) pressure hull
Beam	9.35 m (30 ft 8 in) o/a 4.90 m (16 ft 1 in) pressure hull
Height	11.70 m (38 ft 5 in)
Draught	6.51 m (21 ft 4 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	2 shafts 2 × diesel engines 2 × electric motors
Speed	14.4–14.9 knots (26.7–27.6 km/h; 16.6–17.1 mph) surfaced 6.2 knots (11.5 km/h; 7.1 mph) submerged
Range	12,350  nmi (22,870 km; 14,210 mi) at 10 knots (19 km/h; 12 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	240 m (790 ft)
Complement	6 officers and 47 enlisted
Armament	2 × 3.7 cm (1.5 in) SK C/30 anti-aircraft guns 1 × 2 cm (0.79 in) C/30 AA gun
Service record [2] [3]
Part of	4th U-boat Flotilla 27 March 1943 – 31 March 1944 12th U-boat Flotilla 1 April – 12 June 1944
Identification codes	M 51 045
Commanders	Oblt.z.S. Wilhelm Gerlach 27 March 1943 – 12 June 1944
Operations	1st patrol: 4 May – 12 June 1944
Victories	None

German submarine U-490 was a Type XIV supply and replenishment U-boat ("Milchkuh") of Nazi Germany's Kriegsmarine during World War II.

Her keel was laid down on 21 February 1942, by Germaniawerft of Kiel as yard number 559. She was launched on 24 December 1942 and commissioned on 27 March 1943, with Leutnant zur See Wilhelm Gerlach in command. He remained in command throughout the boat's career. ^[2]

The U-boat's service life commenced with the 4th U-boat Flotilla from 27 March 1943 until 31 March 1944 for training. She then served, for operations, with the 12th flotilla.

Design

German Type XIV submarines were shortened versions of the Type IXDs they were based on. U-490 had a displacement of 1,688 tonnes (1,661 long tons) when at the surface and 1,932 tonnes (1,901 long tons) while submerged. ^[4] The U-boat had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 48.51 m (159 ft 2 in), a beam of 9.35 m (30 ft 8 in), a height of 11.70 m (38 ft 5 in), and a draught of 6.51 m (21 ft 4 in). The submarine was powered by two Germaniawerft supercharged four-stroke, six-cylinder diesel engines producing a total of 2,800–3,200 metric horsepower (2,060–2,350 kW; 2,760–3,160 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/38-8 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 propellers. The boat was capable of operating at depths of up to 240 metres (790 ft). ^[4]

The submarine had a maximum surface speed of 14.4–14.9 knots (26.7–27.6 km/h; 16.6–17.1 mph) and a maximum submerged speed of 6.2 knots (11.5 km/h; 7.1 mph). ^[4] When submerged, the boat could operate for 120 nautical miles (220 km; 140 mi) at 2 knots (3.7 km/h; 2.3 mph); when surfaced, she could travel 12,350 nautical miles (22,870 km; 14,210 mi) at 10 knots (19 km/h; 12 mph). U-490 was not fitted with torpedo tubes or deck guns, but had two 3.7 cm (1.5 in) SK C/30 anti-aircraft guns with 2500 rounds as well as a 2 cm (0.79 in) C/30 guns with 3000 rounds. The boat had a complement of fifty-three. ^[4]

Operational career

U-490's only patrol began with her departure from Kiel on 4 May 1944. She headed for the Atlantic by way of the so-called Faeroes Gap between Iceland and the Faeroe Islands, north of the British Isles.

Although as a supply boat, she avoided combat, she was lost on her first patrol when on 12 June, she was attacked in mid-ocean by the escort carrier USS Croatan and the destroyers Frost, Huse and Inch. There were 60 survivors (no casualties). ^[2]

References

1. Kemp 1999, p. 196.
2. Helgason, Guðmundur. "The Type XIV boat U-490". German U-boats of WWII – uboat.net. Retrieved 8 June 2012.
3. Helgason, Guðmundur. "War Patrols by German U-boat U-490". German U-boats of WWII – uboat.net. Retrieved 8 June 2012.
4. Gröner 1991, p. 79.

Bibliography

• 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). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN   0-85177-593-4.
• Kemp, Paul (1999). U-Boats Destroyed – German Submarine Losses in the World Wars. London: Arms & Armour. ISBN   1-85409-515-3.

External links

• Helgason, Guðmundur. "The Type XIV boat U-490". German U-boats of WWII – uboat.net. Retrieved 6 December 2014.

42°47′N40°08′W / 42.783°N 40.133°W / 42.783; -40.133