|Ordered||5 Jun 1941|
|Laid down||21 Mar 1942||Flender Werke AG, Lübeck (werk 311)|
|Launched||20 Jan 1943|
|Commissioned||23 Mar 1943||Oblt. Joachim Zander|
|Successes||1 ship sunk, total tonnage 10,342 GRT|
Sunk on 22 April 1944 in the North Atlantic south-west of Ireland, in position 52.09N, 19.07W, by depth charges from the Canadian frigates HMCS Matane and HMCS Swansea. 51 dead (all hands lost). (FDS/NHB, April 1986).
Previously recorded fate
- Sunk 24 April, 1944 southwest of Ireland, in position 50.36N, 18.36W,
by depth charges from a Canadian Sunderland aircraft (Sqdn. 423/A). (Postwar assessment)
Notes. This attack was in fact against U-672 inflicting severe damages.
U-311 operated with the following Wolfpacks during its career:
Coronel (7 Dec 1943 - 8 Dec 1943)
Coronel 1 (8 Dec 1943 - 14 Dec 1943)
Coronel 2 (14 Dec 1943 - 17 Dec 1943)
Amrum (18 Dec 1943 - 23 Dec 1943)
Rügen 5 (23 Dec 1943 - 2 Jan 1944)
Rügen 4 (2 Jan 1944 - 7 Jan 1944)
Rügen (7 Jan 1944 - 19 Jan 1944)
Preussen (19 Mar 1944 - 22 Mar 1944)
Attacks on this boat and other events
12 May 1943
Aircraft attack, aircraft shot down:British B-17 Flying Fortress (RAF Sqdn 206)
12 Mar 1944
Aircraft attack, aircraft shot down: British Halifax HX225 (RAF Sqdn 58/L)
01.20 hrs, Bay of Biscay, outbound: U-311 shot down the Halifax (misidentified as a Flying Fortress) after being strafed and depth charged. The crew of eight were all lost.(Sources: Franks/Zimmerman)
19 Mar 1944
Despite being hunted for hours by the escorts of the large tanker convoy CU 17, U-311 penetrated the defences and sank the large US steam tanker Seakay in the Atlantic west of Lands End, eluding the escorts afterwards. (Sources: Blair, vol 2, page 506)
3 recorded attacks on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-311 did not suffer any casualties (we know of) until the time of her loss.
We have 1 emblem entry for this boat. See the emblem page for this boat or view emblems individually below.