SM U-122

SM U-122 was a Type UE II long-range minelayer submarine of the Imperial German Navy during World War I. U-122 was engaged in naval warfare and took part in the First Battle of the Atlantic. U-122 succeeded in sinking one ship during her career for a total of.

U-122 was surrendered to the Allies at Harwich on 26 November 1918 in accordance with the requirements of the Armistice with Germany. She was later laid up at Chatham until towed out round into the English Channel and scuttled off the Isle of Wight on 1 July 1921.

Design
Type UE II submarines were preceded by the shorter Type UE I submarines. U-122 had a displacement of 1163 t when at the surface and 1468 t while submerged. She had a total length of 82 m, a beam of 7.42 m, a height of 10.12 m, and a draught of 4.22 m. The submarine was powered by two 2400 PS engines for use while surfaced, and two 1235 PS engines for use while submerged. She had two shafts and two 1.61 m propellers. She was capable of operating at depths of up to 75 m.

The submarine had a maximum surface speed of 14.7 kn and a maximum submerged speed of 7.2 kn. When submerged, she could operate for 35 nmi at 4.5 kn; when surfaced, she could travel 11470 nmi at 8 kn. U-122 was fitted with four 50 cm torpedo tubes (fitted at the bow), twelve torpedoes, two 100 cm mine chutes (fitted at the stern), forty-two mines, one 15 cm SK L/45 deck gun, and 494 rounds. She had a complement of forty (thirty-six crew members and four officers).