SM UC-20

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For other ships of the same name, see German submarine U-20.
Career (German Empire)
Name: UC-20
Ordered: 26 August 1915[1]
Builder: Blohm & Voss, Hamburg[2]
Yard number: 270[1]
Launched: 1 April 1916[1]
Commissioned: 7 September 1916[1]
Fate: surrendered, January 1919; broken up, 1919–20[1]
General characteristics
Class & type: German Type UC II submarine
Displacement: 417 t (460 short tons), surfaced[2]
493 t (543 short tons), submerged
Length: 161 ft 11 in (49.35 m)[2]
Beam: 17 ft 4 in (5.28 m)[2]
Draft: 12 ft 2 in (4 m)[3]
Propulsion: 2 × propeller shafts
2 × 6-cylinder, 4-stroke diesel engines, 500 bhp (370 kW)[3]
2 × electric motors, 460 shp (340 kW)[3]
Speed: 11.6 knots (21.5 km/h), surfaced[2]
7.0 knots (13.0 km/h), submerged
Endurance: 9,430 nautical miles at 7 knots, surfaced[3]
(17,460 km at 13 km/h)
55 nautical miles at 4 knots, submerged[3]
(102 km at 7.4 km/h)
Test depth: 50 m (160 ft)[3]
Complement: 26[3]
Armament: 6 × 100 cm (39.4 in) mine tubes[3]
18 × UC 200 mines
3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern)
7 × torpedoes
1 × 8.8 cm (3.46 in) KL/30 deck gun[2]
Notes: 35-second diving time[2]

SM UC-20 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 26 August 1915 and was launched on 1 April 1916. She was commissioned into the German Imperial Navy on 7 September 1916 as SM UC-20.[Note 1] In 13 patrols UC-20 was credited with sinking 21 ships, either by torpedo or by mines laid. UC-20 was surrendered on 16 January 1919 and broken up at Preston in 1919–20.[1]

Notes

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

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Helgason, Guðmundur. "WWI U-boats: UC-20". U-Boat War in World War I. Uboat.net. Retrieved 22 February 2009. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Tarrant, p. 173.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Gardiner, p. 182.

Bibliography

  • Gardiner, Robert, ed. (1985). Conway's All the World's Fighting Ships, 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-907-8. OCLC 12119866. 
  • Tarrant, V. E. (1989). The U-Boat Offensive: 1914–1945. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-764-7. OCLC 20338385. 


Completed
  • List of German U-boats


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