German World War II submarine
German submarine "U-984" was a Type VIIC U-boat built for Nazi Germany's "Kriegsmarine" for service during World War II.
She was laid down on 7 September 1942 by Blohm &amp; Voss, Hamburg as yard number 184, launched on 12 May 1943 and commissioned on 17 June 1943 under "Oberleutnant zur See" Heinz Sieder.
Design.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-984" had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two Brown, Boveri &amp; Cie GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . "U-984" was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and one twin C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
Service history.
The boat's career began with training at 5th U-boat Flotilla on 17 June 1943, followed by active service on 1 August 1944 as part of the 9th Flotilla for the remainder of her service.
On 22 January 1944, "Maschinenobergefreiter" Hermann Keller was lost overboard in the North Atlantic.
On 8 June 1944, "U-984" was bombed by an unidentified Allied aircraft and was sufficiently damaged to force a return to base on 9 June
In 5 patrols she accounted for the total loss of 3 merchant ships, for a total of  gross register tons (GRT), one warship total loss (1,300 tons) and damaged one other merchant ship.
Wolfpacks.
"U-984" took part in four wolfpacks, namely:
Fate.
Sunk on or about 2 August 1944 in the English Channel south-west of Brighton in position by unknown cause. All hands were lost.
Previously recorded fate.
"U-984" was sunk on 20 August 1944 in the North Atlantic in the Bay of Biscay in position , by depth charges from Canadian destroyers , and . All hands were lost.
"U-984" has subsequently been positively identified as the U-boat sunk on or about 2 August 1944 in the English Channel south-west of Brighton, in position 50.03.732N, 00.32.398W, by unknown cause, with presently no plausible explanation for its loss in the wreck position.
References.
Notes.
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