German submarine U-1221
| History | |
|---|---|
 Nazi Germany
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| 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 | |
| Class & type: | Type IXC/40 submarine |
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| Beam: |
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| Height: | 9.60 m (31 ft 6 in) |
| Draught: | 4.67 m (15 ft 4 in) |
| Installed power: |
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| Test depth: | 230 m (750 ft) |
| Complement: | 4 officers, 44 enlisted |
| Armament: |
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| Service record | |
| Identification codes: | M 55 188 |
| Commanders: |
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| Operations: | 1 patrol |
German submarine U-1221 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.
Design
German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-1221 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.[1] 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).[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).[1] 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-1221 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) as well as a 2 cm (0.79 in) anti-aircraft gun. The boat had a complement of forty-eight.[1]
Service history
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
- 1 2 3 4 Gröner 1991, p. 68.
- ↑ Busch & Röll 1999, pp. 331.
Bibliography
- Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) 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 2. Translated by Thomas, Keith; Magowan, Rachel (London: Conway Maritime Press). ISBN 0-85177-593-4.
Coordinates: 54°20′N 10°10′E / 54.333°N 10.167°E