|Ordered||5 Jun 1941|
|Laid down||10 Apr 1942||Flender Werke AG, Lübeck (werk 312)|
|Launched||27 Feb 1943|
|Commissioned||21 Apr 1943||Oblt. Kurt-Heinz Nicolay|
|Successes||No ships sunk or damaged|
Surrendered at Narvik, Norway on 9 May 1945.
Transferred to Loch Eriboll, Scotland, on 19 May 1945, later to Lisahally and Loch Ryan.
Operation Deadlight (post-war Allied operation, info)
The U-boats that were in the Narvik area at the end of the war were all moved to the Skjomenfjord upon Allied orders to avoid conflicts with the Norwegians on 12 May. On 15 May, a German convoy of five ships (the fleet tender Grille with the staff of FdU Norwegen aboard, the fleet oiler Kärnten, the repair ship Kamerun and the depot ships Huascaran and Stella Polaris) and 15 U-boats (U-278, U-294, U-295, U-312, U-313, U-318, U-363, U-427, U-481, U-668, U-716, U-968, U-992, U-997 and U-1165) left for transfer to Trondheim, but was intercepted after two days by the 9th Escort Group off the Norwegian coast and officially capitulated. While the ships were allowed to proceed to Trondheim, the U-boats were escorted to Loch Eriboll, Scotland, arriving on 19 May. All U-boats were later that month transferred to Lisahally or Loch Ryan for Operation Deadlight.
U-312 operated with the following Wolfpacks during its career:
Isegrim (25 Jan 1944 - 27 Jan 1944)
Werwolf (8 Feb 1944 - 28 Feb 1944)
Thor (17 Mar 1944 - 5 Apr 1944)
Donner (5 Apr 1944 - 10 Apr 1944)
Donner & Keil (30 Apr 1944 - 3 May 1944)
Trutz (3 May 1944 - 11 May 1944)
Grimm (9 Sep 1944 - 1 Oct 1944)
Panther (20 Oct 1944 - 4 Nov 1944)
Hagen (13 Mar 1945 - 21 Mar 1945)
Faust (19 Apr 1945 - 1 May 1945)
General notes on this boat
11 May 1944. On 11 May, 1944 U-312 had to return to base due to technical problems with the engines.
This boat was fitted with a Schnorchel underwater-breathing apparatus in November 1944.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-312 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.