SM UC-31

For other ships with the same name, see German submarine U-31.
History
German Empire
NameUC-31
Ordered29 August 1915[1]
BuilderAG Vulcan, Hamburg[2]
Yard number70[1]
Launched7 August 1916[1]
Commissioned2 September 1916[1]
FateSurrendered, 26 November 1918; broken up, 1922[1]
General characteristics [3]
Class and typeType UC II submarine
Displacement
  • 400 t (390 long tons), surfaced
  • 480 t (470 long tons), submerged
Length
Beam
  • 5.22 m (17 ft 2 in) o/a
  • 3.65 m (12 ft) pressure hull
Draught3.68 m (12 ft 1 in)
Propulsion
Speed
  • 11.6 knots (21.5 km/h; 13.3 mph), surfaced
  • 6.7 knots (12.4 km/h; 7.7 mph), submerged
Range
  • 10,040 nmi (18,590 km; 11,550 mi) at 7 knots (13 km/h; 8.1 mph), surfaced
  • 53 nmi (98 km; 61 mi) at 4 knots (7.4 km/h; 4.6 mph), submerged
Test depth50 m (160 ft)
Complement26
Armament
Notes48-second diving time
Service record
Part of:
  • I Flotilla
  • 10 December 1916 – 14 June 1918
  • Flandern II Flotilla
  • 14 June – 7 October 1918
  • I Flotilla
  • 7 October – 11 November 1918
Commanders:
  • Oblt.z.S. / Kptlt. Otto von Schrader[4]
  • 2 September 1916 – 20 July 1917
  • Kptlt. Kurt Siewert[5]
  • 21 July 1917 – 14 June 1918
  • Oblt.z.S. Willy Stüben[6]
  • 15 June – 11 November 1918
Operations: 13 patrols
Victories:
  • 35 merchant ships sunk
    (50,258 GRT)
  • 3 auxiliary warships sunk
    (759 GRT)
  • 3 merchant ships damaged
    (8,016 GRT)
  • 1 warship damaged
    (1,025 tons)

SM UC-31 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 29 August 1915 and was launched on 7 August 1916. She was commissioned into the German Imperial Navy on 2 September 1916 as SM UC-31.[Note 1] In 13 patrols UC-31 was credited with sinking 38 ships, either by torpedo or by mines laid. UC-31 was surrendered on 26 November 1918 and broken up at Canning Town in 1922.[1]

  1. ^ a b c d e f Helgason, Guðmundur. "WWI U-boats: UC 31". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 February 2009.
  2. ^ Tarrant, p. 173.
  3. ^ Gröner 1991, pp. 31–32.
  4. ^ Helgason, Guðmundur. "WWI U-boat commanders: Otto von Schrader (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.
  5. ^ Helgason, Guðmundur. "WWI U-boat commanders: Kurt Siewert (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.
  6. ^ Helgason, Guðmundur. "WWI U-boat commanders: Willy Stüben". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 February 2015.


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