List of all U-boats




Ordered25 May 1941
Laid down7 Sep 1942 Blohm & Voss, Hamburg (werk 184)
Launched12 May 1943
Commissioned17 Jun 1943Oblt. Heinz Sieder (Knights Cross)
17 Jun 1943 - 20 Aug 1944  Oblt. Heinz Sieder (Knights Cross)
5 patrols
17 Jun 1943-31 Jul 1944  5. Flottille (training)
1 Aug 1944-20 Aug 1944  9. Flottille (active service)
Successes1 ship damaged, total tonnage 7,240 GRT
3 ships a total loss, total tonnage 21,550 GRT
1 warship a total loss, total tonnage 1,300 tons

Sunk 20 Aug 1944 in the Bay of Biscay west of Brest, in position 48.16N, 05.33W, by depth charges from the Canadian destroyers HMCS Ottawa, HMCS Kootenay and HMCS Chaudiere. 45 dead (all hands lost).

Loss position

See the 5 ships hit by U-984 - View the 5 war patrols

Wolfpack operations

U-984 operated with the following Wolfpacks during its career:
   Rügen (14 Jan 1944 - 26 Jan 1944)
   Stürmer (26 Jan 1944 - 3 Feb 1944)
   Igel 1 (3 Feb 1944 - 17 Feb 1944)
   Dragoner (22 May 1944 - 27 May 1944)

Attacks on this boat and other events

8 Jun 1944
The boat was bombed by an unidentified Allied aircraft sometime between 6 June and 9 June, and returned to base 9 June. (Sources: Blair, vol 2, page 586)

1 recorded attack on this boat.

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus in March 1944. Read more about the Schnorchel and see list of fitted boats.

Men lost from the boat

22 Jan 1944
A man was lost overboard in the North Atlantic. [Maschinenobergefreiter Hermann Keller]

  Related: For more info on such losses see - Men lost from U-boats -

U-boat Emblems

We have 1 emblem entry for this boat. See the emblem page for this boat or view emblems individually below.

Coat of Arms of Kufstein

Media links

U-Boat Attack Logs

Daniel Morgan and Bruce Taylor

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

Wynn, Kenneth

Hitler's U-boat War, Vol II

Blair, Clay

German U-Boat Losses During World War II

Niestle, Axel