![Decrease font size](/images/icon_font_small.jpg)
![Reset font size](/images/icon_font_medium.jpg)
![Increase font size](/images/icon_font_large.jpg)
U-1233
Country | Germany |
Ship Class | Type IX-class Submarine |
Builder | Deutsche Werft Hamburg |
Yard Number | 396 |
Ordered | 14 Oct 1941 |
Laid Down | 29 Apr 1943 |
Launched | 23 Dec 1943 |
Commissioned | 22 Mar 1944 |
Sunk | 29 Dec 1945 |
Displacement | 1,144 tons standard; 1,257 tons submerged |
Length | 252 feet |
Beam | 23 feet |
Draft | 15 feet |
Machinery | Two MAN M 9 V 40/46 supercharged 4-stroke 9cyl diesel engines (4,300bhp), 2 Siemens-Schuckert 2 GU 345/34 double-acting electric motors (990shp), two shafts, two 1.92m propellers |
Speed | 18 knots |
Range | 13,850nm at 10 knots surfaced, 63nm at 4 knots submerged |
Crew | 48 |
Armament | 4x53.3cm bow torpedo tubes, 2x53.3cm stern torpedo tubes, 22 torpedoes, 1x10.5cm SK C/32 gun, 1x3.7cm Flak M42 anti-aircraft gun, 2x2x2cm C/30 anti-aircraft guns |
Submerged Speed | 7.3 knots |
Contributor: C. Peter Chen
ww2dbaseU-1233 was commissioned into German naval service under the command of KorvettenkapitÀn Hans-Joachim Kuhn in Mar 1944. She was assigned to the 31st Submarine Flotilla for training before being transferred to the 33rd Submarine Flotilla for front line duty. After completing a war patrol out of Horten, Norway, Oberleutnant zur See Heinrich Niemeyer relieved Kuhn as the boat's commanding officer. In May 1945, she was ordered to set sail together with U-155 and U-680 for Fredericia, Denmark in preparation for surrender; en route, the group was attacked by British aircraft, and they shot down one P-51 Mustang fighter of No. 126 Squadron RAF. In Jun 1945, she was transferred to Wilhelmshaven, Germany by the British, from where she would sail, together with other captured ships, to Loch Ryan in southwestern Scotland, United Kingdom. She was towed out to sea in Dec 1945 and sunk by gunfire from destroyer HMS Onslaught as a part of Operation Deadlight.
ww2dbaseSources:
uboat.net
Wikipedia
Last Major Revision: Nov 2021
Submarine U-1233 Interactive Map
U-1233 Operational Timeline
14 Oct 1941 | The order for the construction of U-1233 was issued. |
29 Apr 1943 | The keel of U-1233 was laid down at the Deutsche Werft yard in Hamburg, Germany. |
23 Dec 1943 | U-1233 was launched at the Deutsche Werft yard in Hamburg, Germany. |
22 Mar 1944 | U-1233 was commissioned into service under the command of KorvettenkapitÀn Hans-Joachim Kuhn and was assigned to 31st Submarine Flotilla. |
1 Nov 1944 | U-1233 was transferred to 33rd Submarine Flotilla. |
18 Nov 1944 | U-1233 departed Kiel, Germany. |
24 Nov 1944 | U-1233 arrived at Bergen, Norway. |
11 Dec 1944 | U-1233 departed Horten, Vestfold, Norway for her first and only war patrol. |
16 Dec 1944 | U-1233 arrived at Bergen, Norway, ending her first and only war patrol. |
17 Dec 1944 | U-1233 departed Bergen, Norway. |
21 Dec 1944 | U-1233 arrived at Bergen, Norway. |
31 Mar 1945 | U-1233 departed Kristiansand, Vest-Agder, Norway. |
3 Apr 1945 | U-1233 arrived at Flensburg, Schleswig-Holstein, Germany. |
15 Apr 1945 | Oberleutnant zur See Heinrich Niemeyer was named the commanding officer of U-1233, relieving Hans-Joachim Kuhn. |
5 May 1945 | U-1233 surrendered to the Allieds in BĂ„ring Bay near Fredericia, Denmark. |
28 Dec 1945 | U-1233 was towed into the Atlantic Ocean from Loch Ryan, Scotland, United Kingdom by HMS Freedom. |
29 Dec 1945 | U-1233 was sunk in the Atlantic Ocean by gunfire from HMS Onslaught about 40 miles northwest of Ireland. |
Did you enjoy this article or find this article helpful? If so, please consider supporting us on Patreon. Even $1 per month will go a long way! Thank you. Share this article with your friends: Stay updated with WW2DB: |
![](/images/icon_amz_prime_trial_200x80.png)
- » WW2DB's 19th Anniversary (29 Dec 2023)
- » Looted Painting "Madonna with Child" Returned to Poland (2 Jun 2023)
- » Wreck of USS Mannert L. Abele Found (29 May 2023)
- » Wreck of Montevideo Maru Found (25 Apr 2023)
- » Accidental Detonation of a WW2-Era Bomb in Great Yarmouth (10 Feb 2023)
- » See all news
- » 1,150 biographies
- » 337 events
- » 43,556 timeline entries
- » 1,240 ships
- » 349 aircraft models
- » 207 vehicle models
- » 372 weapon models
- » 123 historical documents
- » 259 facilities
- » 469 book reviews
- » 28,458 photos
- » 432 maps
George Patton, 31 May 1944
![](/images/icon_patreon_200x80.png)
Please consider supporting us on Patreon. Even $1 a month will go a long way. Thank you!
![](/images/icon_teespring_200x80.png)
Or, please support us by purchasing some WW2DB merchandise at TeeSpring, Thank you!