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German submarine U-1221
Career (Nazi Germany)
Name: U-1221
Ordered: 25 August 1941
Builder: Deutsche Werft AG, Hamburg
Yard number: 384
Laid down: 28 October 1942
Launched: 26 May 1943
Commissioned: 11 August 1943
Fate: sunk in Kiel harbour, 3 April 1945
General characteristics [1]
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
Height: 9.6 m (31 ft 6 in)
Draft: 4.67 m (15 ft 4 in)
Propulsion: 2 × MAN M 9 V 40/46 supercharged 9-cylinder diesel engines, 4,400 hp (3,281 kW)
2 × SSW GU 345/34 double-acting electric motors, 1,000 hp (746 kW)
Speed: 18.3 knots (33.9 km/h; 21.1 mph) surfaced
7.3 kn (13.5 km/h; 8.4 mph) submerged
Range: 13,850 nmi (25,650 km; 15,940 mi) at 10 kn (19 km/h; 12 mph) surfaced
63 nmi (117 km; 72 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged
Test depth: 230 m (750 ft)
Complement: 4 officers, 44 enlisted
Armament:
Service record
Identification codes: M 55 188
Commanders: Oblt.z.S. Karl Kölzer
Oblt.z.S. Paul Ackermann
Operations: 1 patrol

German submarine U-1221 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

U-1221 was ordered in August 1941 from Deutsche Werft, AG in Hamburg under the yard number 368. Her keel was laid down on 28 October 1942 and the U-boat was launched the following year on 25 May 1943. She was commissioned into service under the command of Oberleutnant zur See Karl Kölzer (Crew 31) in the 4th U-boat Flotilla.

On 20 January 1944, Kölzer handed over command to Oblt.z.S. Paul Ackermann (Crew XII/39), who took her on her first - and only - patrol in the West Atlantic from 14 August to 27 November 1944.

During an air raid by Eighth Air Force on Kiel, U-1221 was hit by two bombs in the fore-ship on 3 April 1945. The U-boat sank immediately, taking the skeleton crew of 18 with her. Seven of her crew perished, while the rest was rescued through the stern torpedo tubes the next day.[2]

References[]

Notes
  1. Gröner 1985, pp. 105-7.
  2. Busch & Röll 1999, pp. 331.
Bibliography
  • Busch, Rainer; Röll, Hans-Joachim (1999) (in German). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2. 
  • Gröner, Erich (1985) (in German). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. III. Koblenz: Bernard & Graefe. ISBN 3-7637-4802-4. 

Coordinates: 54°20′N 10°10′E / 54.333°N 10.167°E / 54.333; 10.167



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