Name U-122 Builder AG Vulcan, Hamburg Launched 9 December 1917 | Ordered 27 May 1916 Commissioned 4 May 1918 | |
Fate Surrendered to England on 26 November 1918. Ran aground on the English east coast while on her passage to Scapa Flow. She was later broken up. Class and type German Type UE II submarine | ||
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 278 tons. Shortly after, she was surrendered to England following the end of the war.
Design
German Type UE II submarines were preceded by the shorter Type UE I submarines. U-122 had a displacement of 1,163 tonnes (1,145 long tons) when at the surface and 1,468 tonnes (1,445 long tons) while submerged. It had a total length of 269 ft (82 m), a beam of 24 ft 4 in (7.42 m), a height of 33 ft 4 in (10.16 m), and a draught of 13 ft 10 in (4.22 m). The submarine was powered by two 2,400 metric horsepower (1,800 kW; 2,400 shp) engines for use while surfaced, and two 1,235 metric horsepower (908 kW; 1,218 shp) engines for use while submerged. It had two shafts and two 1.61 m (5.3 ft) propellers. It was capable of operating at depths of up to 75 metres (246 ft).
The submarine had a maximum surface speed of 14.7 knots (27.2 km/h; 16.9 mph) and a maximum submerged speed of 7 knots (13 km/h; 8.1 mph). When submerged, it could operate for 35 nautical miles (65 km; 40 mi) at 4.5 knots (8.3 km/h; 5.2 mph); when surfaced, it could travel 11,470 nautical miles (21,240 km; 13,200 mi) at 8 knots (15 km/h; 9.2 mph). U-122 was fitted with four 50 centimetres (20 in) torpedo tubes (fitted at its bow), fourteen torpedoes, two 100 centimetres (39 in) mine chutes (fitted at its stern), forty-two mines, one 15 centimetres (5.9 in) deck machine gun, and 494 rounds. It had a complement of forty (thirty-six crew members and four officers).