SM U-123

SM U-123 was one of the 329 submarines serving in the Imperial German Navy in World War I.
U-123 was engaged in the naval warfare and took part in the First Battle of the Atlantic.
U-123 was surrendered to the Allies at Harwich on 22 November 1918 in accordance with the requirements of the Armistice with Germany. Initially earmarked for experiments, she was laid up at Portsmouth until towed out into the middle of the English Channel and scuttled on 28 June 1921.

Design

Type UE II submarines were preceded by the shorter Type UE I submarines. U-123 had a displacement of when at the surface and while submerged. She had a total length of, a beam of, a height of, and a draught of. The submarine was powered by two engines for use while surfaced, and two engines for use while submerged. She had two shafts and two propellers. She 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, she could operate for at ; when surfaced, she could travel at. U-123 was fitted with four torpedo tubes, twelve torpedoes, two mine chutes, forty-two mines, two SK L/45 deck guns, and 600 rounds. She had a complement of forty.