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German submarine U-884 was a Type IXD/42 U-boat of Nazi Germany's Kriegsmarine during World War II. Her construction was ordered on 2 April 1942 and her keel was laid down on 29 August 1943 by DeSchiMAG AG Weser of Bremen.
She was launched on 17 May 1944, but was never commissioned, and was badly damaged on 30 March 1945 by United States bombs.
Design
German Type IX/D42 submarines were considerably larger than the original Type IXs. U-884 had a displacement of when at the surface and while submerged. The U-boat 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 MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 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-884 was fitted with six torpedo tubes (four fitted at the bow and two at the stern), 24 torpedoes, one SK C/32 naval gun, 150 rounds, and a Flak M42 with 2575 rounds as well as two C/30 anti-aircraft guns with 8100 rounds. The boat had a complement of fifty-five.