SM U-140

SM U-140 was a Type U 139 submarine that served in the Imperial German Navy in World War I. U-140 was engaged in the naval warfare and took part in the First Battle of the Atlantic. [2]

History
German Empire
Name: U-140
Ordered: 1 August 1916
Builder: Germaniawerft, Kiel
Yard number: 301
Launched: 4 November 1917
Commissioned: 28 March 1918
In service: 28 March 1918 – 11 November 1918
Fate:
  • Surrendered 23 February 1919
  • Sunk as target 22 July 1921
General characteristics [1]
Class and type: German Type U 139 submarine
Displacement:
  • 1,930 t (1,900 long tons) surfaced
  • 2,483 t (2,444 long tons) submerged
Length:
Beam:
  • 9.12 m (29 ft 11 in) (o/a)
  • 5.75 m (18 ft 10 in) (pressure hull)
Height: 5.27 m (17 ft 3 in)
Draught: 11.20 m (36 ft 9 in)
Installed power:
  • 2 × 3,500 PS (2,574 kW; 3,452 shp)
  • 2 × 450 PS (331 kW; 444 shp) surfaced
  • 2 × 1,780 PS (1,309 kW; 1,756 shp) submerged
Propulsion: 2 shafts, 2 × 2.10 m (6 ft 11 in) propellers
Speed:
  • 15.8 knots (29.3 km/h; 18.2 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range:
  • 17,750 nmi (32,870 km; 20,430 mi) at 8 knots (15 km/h; 9.2 mph) surfaced
  • 53 nmi (98 km; 61 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:
Service record[2]
Part of:
  • U-Kreuzer Flotilla
  • unknown start – 11 November 1918
Commanders:
Operations: 1 patrol
Victories:
  • 7 merchant ships sunk (30,004 GRT)
  • 1 Coast Guard ship sunk (590 tons)

After the end of World War I, U-140 surrendered to the United States, which used her for testing. Finally, the United States Navy destroyer USS Dickerson (DD-157) sank her as a target in the Atlantic Ocean off Cape Charles, Virginia, on 22 July 1921.

Summary of raiding history

Date Name Nationality Tonnage[Note 1] Fate[3]
27 July 1918 Porto  Portugal 1,079 Sunk
2 August 1918 Tokuyama Maru  Japan 7,029 Sunk
4 August 1918 O. B. Jennings  United States 10,289 Sunk
5 August 1918 Stanley M. Seaman  United States 1,060 Sunk
6 August 1918 Diamond Shoals LV71  United States Navy 590 Sunk
6 August 1918 Merak  United States 3,024 Sunk
21 August 1918 Diomed  United Kingdom 7,523 Sunk

References

Notes

  1. Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. Gröner 1991, pp. 19-21.
  2. Helgason, Guðmundur. "WWI U-boats: U 140". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 December 2014.
  3. Helgason, Guðmundur. "Ships hit by U 140". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 December 2014.

Bibliography

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

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