German submarine U-1228

Last updated
German submarine U-1228 surrenders at Portsmouth NH in May 1945.jpg
U-1228 surrenders at Portsmouth, New Hampshire (USA) on 17 May 1945
History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-1228
Ordered14 October 1941
Builder Deutsche Werft AG, Hamburg
Yard number391
Laid down16 February 1943
Launched2 October 1943
Commissioned22 December 1943
Fate
  • Surrendered on 17 May 1945
  • Sunk on 5 February 1946 by US warships in position 42°32′N69°37′W / 42.533°N 69.617°W / 42.533; -69.617 [1]
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
Part of:
Identification codes: M 55 286
Commanders:
  • Oblt.z.S. Friedrich-Wilhelm Marienfeld
  • 22 December 1943 – 17 May 1945
Operations:
  • 3 patrols:
  • 1st patrol:
  • a. 11 – 15 September 1944
  • b. 17 – 20 September 1944
  • 2nd patrol:
  • a. 12 October – 29 December 1944
  • b. 31 December 1944 – 4 January 1945
  • c. 1 – 3 April 1945
  • d. 9 – 11 April 1945
  • 3rd patrol:
  • 14 April – 17 May 1945
Victories: 1 warship sunk
(900 tons)

German submarine U-1228 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

Contents

Design

German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-1228 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. [2] 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). [2]

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] 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-1228 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. [2]

Service history

U-1228 was ordered on 14 October 1941 from Deutsche Werft in Hamburg-Finkenwerder under the yard number 391. Her keel was laid down on 16 February 1943 and the U-boat was launched on 2 October. About three months later she was commissioned into service under the command of Oberleutnant zur See Friedrich-Wilhelm Marienfeld (Crew X/38) in the 31st U-boat Flotilla on 22 December 1943.

After work-up for deployment, U-1228 transferred to the 2nd U-boat Flotilla and left Kiel for the West Atlantic on 5 September 1944 for her first and only patrol. Stopping briefly in Bergen, Norway, for replenishment, she experienced engine troubles in the Norwegian Sea and had to return to port. She set off again on 12 October from Bergen and operated south of Nova Scotia sinking one warship, HMCS Shawinigan.

She returned to Bergen on 28 December 1944 and continued her journey to Flensburg the same day. On 17 January 1945, she arrived in Wesermünde where she spent the next two months in the yard. U-1228 set out again on 1 April 1945 for operations in the West Atlantic. After the surrender of Germany, the U-boat made for the closest Allied port and surrendered to US forces in Portsmouth, New Hampshire on 17 May 1945.

In August 1945 U-1228 was awarded to the United States and after being tested, she was sunk by USS Sirago on 5 February 1946 in position 42°32′N69°37′W / 42.533°N 69.617°W / 42.533; -69.617 . [1]

Summary of raiding history

DateShip NameNationalityTonnage [Note 1] Fate [3]
25 November 1944 HMCS Shawinigan Canadian Blue Ensign (1921-1957).svg  Royal Canadian Navy 900Sunk

Related Research Articles

German submarine U-1235 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 25 May 1943 at the Deutsche Werft yard at Hamburg, launched on 25 January 1944, and commissioned on 17 May 1944. She served with 31st U-boat Flotilla, a training unit, and with 33rd U-boat Flotilla from 1 December 1944 until 15 April 1945.

German submarine U-1227 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-184 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II.

German submarine U-881 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during World War II. The ship was ordered on 2 April 1942, laid down on 7 August 1943, and launched on 4 March 1944. She was commissioned into the Kriegsmarine under the command of Kapitänleutnant Dr. Karl-Heinz Frischke on 27 May 1944. Initially assigned to the 4th U-boat Flotilla, she was transferred to the 33rd U-boat Flotilla on 1 March 1945.

German submarine U-877 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine during the Second World War. The ship was ordered on 2 April 1942, laid down on 22 May 1943, and launched on 10 December 1943. She was commissioned into the Kriegsmarine under the command of Kapitänleutnant Eberhard Findeisen on 24 March 1944. Initially assigned to the 4th U-boat Flotilla, she was transferred to the 33rd U-boat Flotilla on 1 December 1944.

German submarine U-167 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II. Her keel was laid down on 12 March 1941 by the Deutsche Schiff- und Maschinenbau AG in Bremen as yard number 706. She was launched on 5 March 1942 and commissioned on 4 July with Kapitänleutnant Kurt Neubert in command.

German submarine U-169 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II. Her keel was laid down on 15 May 1941 by the Deutsche Schiff- und Maschinenbau AG in Bremen as yard number 708. She was launched on 6 June 1942 and commissioned on 16 November with Oberleutnant zur See Hermann Bauer in command.

German submarine U-526 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II.

German submarine U-801 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine <i>U-805</i> German World War II submarine

German submarine U-805 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-841 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-842 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-845 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-846 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-856 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-878 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-879 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-880 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-1223 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

German submarine U-1231 was a Type IXC/40 U-boat built for Nazi Germany's Kriegsmarine during World War II.

References

Notes

  1. ↑ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. 1 2 Busch & Röll 1999, p. 397.
  2. 1 2 3 4 Gröner 1991, p. 68.
  3. ↑ Helgason, Guðmundur. "Ships hit by U-1228". German U-boats of WWII - uboat.net. Retrieved 17 February 2014.

Bibliography

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.