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SM U-21 (Germany): Wikis

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Class and type: German Type U 19 submarine
General characteristics
Displacement: 650 tons surfaced, 837 tons submerged[1]
Length: 64.2 m (210.6 ft)[2]
Beam: 6.1 m (20.0 ft)[3]
Draught: 3.6 m (11.8 ft)[4]
Speed: •28.7 km/h (15.5 kn) surfaced[5]
•17.6 km/h (9.5 kn) submerged[6]
Range: 9,800 km (5,300 nmi) at 15 km/h (8.1 kn)[7]
Armament: •four 50 cm (19.7 in) torpedo tubes[8] (two bow, two stern, nine torpedoes)[9]
•1 x 88 mm (3.46 in) deck gun (two from 1916 on)[10]
Service record
Part of: Kaiserliche Marine:
I Flottille

SM U-21 was one of 329 submarines serving in the Imperial German Navy (Kaiserliche Marine) in World War I. She was engaged in commerce war as part of the naval warfare, during the First Battle of the Atlantic.

Notes

  1. ^ Fitzsimons, Bernard, ed. "U-Boats (1905-18)", in The Illustrated Encyclopedia of 20th Century Weapons and Warfare, "(Phoebus Publishing, 1978), Volume 23, p.2534.
  2. ^ Fitzsimons, p.2534.
  3. ^ Fitzsimons, p.2534.
  4. ^ Fitzsimons, p.2534.
  5. ^ Fitzsimons, p.2534.
  6. ^ Fitzsimons, p.2534.
  7. ^ Fitzsimons, p.2534.
  8. ^ Fitzsimons, p.2534.
  9. ^ Fitzsimons, p.2534.
  10. ^ Fitzsimons, p.2575; he mistakenly identifies it as 86mm p.2534.

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