German submarine U-1225

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-1225
Ordered25 August 1941
Builder Deutsche Werft, Hamburg
Yard number388
Laid down28 December 1942
Launched21 July 1943
Commissioned10 November 1943
FateSunk on 24 June 1944
General characteristics
Class and type Type IXC/40 submarine
Displacement
  • 1,144  t (1,126 long tons) surfaced
  • 1,257 t (1,237 long tons) submerged
Length
Beam
  • 6.86 m (22 ft 6 in) o/a
  • 4.44 m (14 ft 7 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.67 m (15 ft 4 in)
Installed power
  • 4,400 PS (3,200 kW; 4,300 bhp) (diesels)
  • 1,000 PS (740 kW; 990 shp) (electric)
Propulsion
Speed
  • 18.3 knots (33.9 km/h; 21.1 mph) surfaced
  • 7.3 knots (13.5 km/h; 8.4 mph) submerged
Range
  • 13,850  nmi (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 63 nmi (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth230 m (750 ft)
Complement4 officers, 44 enlisted
Armament
Service record [1] [2]
Part of:
Identification codes: M 53 196
Commanders:
  • Oblt.z.S. Ernst Sauerberg
  • 10 November 1943 – 24 June 1944
  • Oblt.z.S. Ekkehard Scherraus
  • 15 May – 12 June 1944
Operations:
  • 1 patrol:
  • 20 – 24 June 1944
Victories: None

German submarine U-1225 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during World War II.

Contents

The submarine was laid down on 28 December 1942 at the Deutsche Werft yard at Hamburg and served as a training unit until transferred into active service 31 May 1944. Four days after leaving port for her first patrol, U-1225 was attacked by a RAF Catalina and both were lost. All 56 sailors and 3 out of 8 aircrew perished.

Design

German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-1225 had a displacement of 1,144 tonnes (1,126 long tons) when at the surface and 1,257 tonnes (1,237 long tons) while submerged. [3] The U-boat had a total length of 76.76 m (251 ft 10 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.86 m (22 ft 6 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.67 m (15 ft 4 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.92 m (6 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft). [3]

The submarine had a maximum surface speed of 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph). [3] When submerged, the boat could operate for 63 nautical miles (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 13,850 nautical miles (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph). U-1225 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 180 rounds, and a 3.7 cm (1.5 in) Flak M42 as well as two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of forty-eight. [3]

Service history

The submarine was laid down on 28 December 1942 at the Deutsche Werft yard at Hamburg, launched on 21 July 1943, and commissioned on 10 November 1943 under the command of Oberleutnant zur See Ernst Sauerberg. The U-boat then served with 31st U-boat Flotilla, a training unit, until 31 May 1944. She was then transferred to the 2nd U-boat Flotilla for active service. [1]

U-1225 had a short career in active service. She departed Kristiansand on 20 June 1944, never to return. Four days out of port, the new submarine was attacked by Canso aircraft of No. 162 Squadron RCAF. The flying boat was shot down, but not before her depth charges fatally wounded the U-boat. All 56 sailors went down with the sub. Three of the eight aircrew from the Catalina were lost as well. [4] The pilot, David Ernest Hornell, was awarded a posthumous Victoria Cross.

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References

  1. 1 2 Helgason, Guðmundur. "The Type IXC/40 boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.
  2. ↑ Helgason, Guðmundur. "War Patrols by German U-boat U-1225". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.
  3. 1 2 3 4 Gröner 1991, p. 68.
  4. ↑ Helgason, Guðmundur. "Patrol of U-boat U-1225 from 20 June 1944 to 24 June 1944". German U-boats of WWII - uboat.net. Retrieved 1 November 2011.

Bibliography

63°00′N0°50′W / 63.000°N 0.833°W / 63.000; -0.833

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