U-427

Type

VIIC

 
Ordered5 Jun 1941
Laid down27 Jul 1942 Danziger Werft AG, Danzig (werk 128)
Launched6 Feb 1943
Commissioned2 Jun 1943Oblt. Carl-Gabriel Graf von Gudenus
Commanders
2 Jun 1943 - 8 May 1945  Oblt. Graf Carl-Gabriel von Gudenus
Career
5 patrols
2 Jun 1943-1 Jun 1944  8. Flottille (training)
1 Jun 1944-31 Jul 1944  7. Flottille (front boat)
1 Aug 1944-4 Nov 1944  11. Flottille (front boat)
5 Nov 1944-28 Feb 1945  13. Flottille (front boat)
1 Mar 1945-8 May 1945  14. Flottille (front boat)
SuccessesNo ships sunk or damaged
Fate

Surrendered at Narvik, Norway on 8 May, 1945. Transferred to Loch Eriboll, Scotland, on 19 May and later to Loch Ryan for Operation Deadlight.

Operation Deadlight (post-war Allied operation, info)
Sunk on 21 December 1945 at 56.04N x 09.35W by unknown causes.

View the 5 war patrols

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 four ships (the fleet tender Grille with the staff of FdU Norwegen aboard, the fleet oiler Kärnten 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.

Wolfpack operations

U-427 operated with the following Wolfpacks during its career:
   Faust (21 Apr 1945 - 30 Apr 1945)

Attacks on this boat

29 Apr 1945
During an attack on convoy RA.66 U-427 unsuccessfully attacked two of its escorts, the Canadian destroyers HMCS Haida and Iroquois. The escorts fought back and dropped a total of 678 depth charges on U-427's believed position during a several hour long hunt. Through some good luck and no doubt equal skill the U-boat escaped the area. This is believed to the second last attack on an Arctic convoy.

4 May 1945
While taking part in the last convoy attack of the war the boat was severely damaged by escorts and, unable to dive, was escorted by U-968 and U-481 back to Kirkesnes, Norway, arriving on May 8. Date given here is approximate. (Sources: Blair, vol 2, page 681)

2 recorded attacks on this boat.

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus in March 1945. Read more about the Schnorchel and see list of fitted boats.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-427 did not suffer any casualties (we know of) until the time of her loss.



U-Boat Operations of the Second World War - Vol 2

Wynn, Kenneth


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Books dealing with this subject include:

German U-Boat Losses During World War II. Niestle, Axel, 1998.
Hitler's U-boat War. Blair, Clay, 1996.
Hitler's U-boat War, Vol II. Blair, Clay, 1998.
U-Boat Operations of the Second World War - Vol 1. Wynn, Kenneth, 1998.
U-Boat Operations of the Second World War - Vol 2. Wynn, Kenneth, 1998.