Sister ship U-145 after surrender
History
German Empire
Name	U-142
Ordered	29 November 1916
Builder	Germaniawerft, Kiel
Yard number	303
Launched	4 March 1918
Commissioned	10 November 1918
Fate	10 November 1918 – Taken right back to the dockyard after being commissioned and demilitarized and finally broken up at Oslebshausen in 1919. Engine plants were surrendered to the allies.
General characteristics [1]
Class and type	German Type U 139 submarine
Displacement	2,158 t (2,124 long tons) surfaced 2,785 t (2,741 long tons) submerged
Length	97.50 m (319 ft 11 in) (o/a) 77 m (252 ft 7 in) (pressure hull)
Beam	9.06 m (29 ft 9 in) (o/a) 5.70 m (18 ft 8 in) (pressure hull)
Height	5.38 m (17 ft 8 in)
Draught	11.20 m (36 ft 9 in)
Installed power	2 × 3,000 PS (2,206 kW; 2,959 shp) 1 × 450 PS (331 kW; 444 shp) surfaced 2 × 1,300 PS (956 kW; 1,282 shp) submerged
Propulsion	2 shafts, 2 × 2.10 m (6 ft 11 in) propellers
Speed	17.5 knots (32.4 km/h; 20.1 mph) surfaced 8.5 knots (15.7 km/h; 9.8 mph) submerged
Range	20,000 nmi (37,000 km; 23,000 mi) at 6 knots (11 km/h; 6.9 mph) surfaced 70 nmi (130 km; 81 mi) at 4.5 knots (8.3 km/h; 5.2 mph) submerged
Test depth	75 m (246 ft 1 in)
Complement	6 (1) officers, 56 (20) enlisted – (prize crew)
Armament	6 × 50 cm (19.7 in) torpedo tubes (four bow, two stern) 19-24 torpedoes 2 × 15 cm (5.9 in) SK L/45 deck guns 2 × 8.8 cm (3.5 in) SK L/30 deck guns
Service record[2]
Commanders:	KrvKpt. Erich Eckelmann 10 – 11 November 1918
Operations:	none
Victories:	none

SM U-142^{[Note 1]} was one of the 329 submarines serving in the Imperial German Navy in World War I. U-142 was not engaged in the naval warfare. ^[3]

References

Bibliography

• Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.