was a coordinated raid of the pocket battleship Admiral Scheer and U-boats in the Kara Sea occurred in 1942, resulting in a limited German success. A follow-up similar operation code-named Unternehmen Wunderland II was planned for 1 August 1943 with involvement of the Lützow but her participation was cancelled. Despite the official end of Wunderland II for 4 October 1943, operations in Kara Sea resumed the following year until 4 October 1944.
II
Since August 1943 U-255 operated near Novaya Zemlya as a refuelling station for a BV 138. The BV 138 searched for Kara Sea convoys to be attacked by Lützow and the Wiking Gruppe.
On 25 July 1943, Soviet minesweeper T-904 sunk on a mine laid by U-625.
On 27 July 1943, U-255 shelled and sunk the Soviet survey shipAkademik Shokalskij.
On 30 July 1043, U-703 sunk the Soviet minesweeper T-911.
On 5 August 1943, the Soviet motorboat Majakovski sunk on a mine laid by U-212.
On 25 August 1943, the Soviet salvage shipASO-1 Shkval sunk on a mine laid by U-625.
On 27 August 1943, U-354 damaged the Soviet merchant Petrovskij.
On 28 August 1943, U-302 sunk the Soviet merchant Dikson. On the same day, the Soviet submarine S-101 intercepted and sunk U-639.
On 6 September 1943, the Soviet merchant Tbilisi with a cargo of coal, sunk on a mine laid by U-636.
On 30 September 1943, U-960 sunk the Soviet merchant Arkhangel´sk with a cargo of machinery equipment, part of the Soviet convoy VA-18.
On 1 October 1943, U-960 attacked convoy VA-18 again, sinking the minesweeper T-896. U-703 attacked the same convoy, sinking the merchant Sergej Kirov with a cargo of machinery equipment.
1944
On 12 August 1944, U-365 attacked the Soviet convoy BD-5: she sunk in succession the minesweepers T-118, T-114 and finally the merchant Marina Raskova. Of 632 men from the ships, only 186 were saved by minesweeper T-116 and 73 by MBR-2 flying boats.
On 26 August 1944, U-957 sunk with gunfire the Soviet survey vessel Nord. The ship could fire a single shell in defence before being sunk.
The German operations in the Kara Sea had no effect on Soviet industrial production and the Soviet shipping was only disrupted for a short time. The German operations managed to divert Soviet forces from the operations close Norway.
