SM U-142

	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
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
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

^ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.

^ Gröner 1991, pp. 19–21.
^ Helgason, Guðmundur. "WWI U-boats: U 142". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 December 2014.
^ Helgason, Guðmundur. "WWI U-boats: U 142". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 January 2010.

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.