German submarine U-1233

Coordinates: 55°51′N 8°54′W / 55.850°N 8.900°W / 55.850; -8.900
Source: Wikipedia, the free encyclopedia.
History
Nazi Germany
NameU-1233
Ordered14 October 1941
BuilderDeutsche Werft AG, Hamburg
Yard number396
Laid down29 April 1943
Launched23 December 1943
Commissioned22 March 1944
Fate
  • Surrendered on 5 May 1945
  • Sunk on 29 December 1945 in position 55°51′N 8°54′W / 55.850°N 8.900°W / 55.850; -8.900 during Operation Deadlight
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
  • 76.76 m (251 ft 10 in)
    o/a
  • 58.75 m (192 ft 9 in)
    pressure hull
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
Part of:
Identification codes: M 49 604
Commanders:
  • K.Kapt.
    Hans-Joachim Kuhn
  • 22 March 1944 – 14 April 1945
  • Oblt.z.S.
    Heinrich Niemeyer
  • 15 April – 5 May 1945
Operations:
  • 1 patrol:
  • a. 24 December 1944 – 28 March 1945
  • b. 31 March – 3 April 1945
Victories: None

German submarine U-1233 was a

Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II
.

Design

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).[1]

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).

2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of forty-eight.[1]

Service history

U-1233 was ordered on 14 October 1941 from

yard number 396. Her keel was laid down on 29 April 1943 and was launched on 23 December 1943. About three months later she was commissioned into service under the command of Korvettenkapitän Hans-Joachim Kuhn (Crew 31) in the 31st U-boat Flotilla
on 22 March 1944.

After completing training and work-up for deployment U-1233 was transferred to the

was shot down.

In June 1945 the surrendered U-boats were transferred to Wilhelmshaven under British guard from where they sailed for Loch Ryan, a collecting point for Operation Deadlight. On 28 December 1945 U-1233 was towed to sea by HMS Freedom. When the cable slipped the U-boat was sunk by artillery fire from HMS Onslaught on 29 December 1945 in position 54°51′N 8°54′W / 54.850°N 8.900°W / 54.850; -8.900

References

  1. ^ a b c d Gröner 1991, p. 68.

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. .
  • 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. .
  • 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. .