German submarine U-994 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
She was ordered on 25 May 1941, and was laid down on 14 November 1942 at Blohm & Voss, Hamburg, as yard number 194. She was launched on 8 July 1943 and commissioned under the command of Leutnant zur See Wolf Ackermann on 2 September 1943.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-994 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 Garbe, Lahmeyer & Co. RP 137/c 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-994 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA mines, one SK C/35 naval gun, 220 rounds, and one twin C/30 anti-aircraft gun. The boat had a complement of between 44 â 52 men.
On 17 July 1944, as U-944 was returning from her first, and only, war patrol she came under attack by a Norwegian Mosquito of No. 333 (Norwegian) Squadron RAF/L. Five crewmen were wounded and the boat sustained some damage and reached Bergen later that same day.
On 9 May 1945, U-994 surrendered at Trondheim, Norway. She was later transferred to Loch Ryan, Scotland on 29 May 1945. Of the 156 U-boats that eventually surrendered to the Allied forces at the end of the war, U-994 was one of 116 selected to take part in Operation Deadlight. U-994 was towed out on 5 December 1945, but foundered while under tow making her one of 55 other U-boats that sank before reaching the scuttling area.
The wreck is located at .