SM UC-23

For other ships with the same name, see German submarine U-23.
History
German Empire
NameUC-23
Ordered29 August 1915[1]
BuilderBlohm & Voss, Hamburg[2]
Yard number273[1]
Launched29 February 1916[1]
Commissioned17 July 1916[1]
FateSurrendered, 25 November 1918; broken up, August 1921[1]
General characteristics [3]
Class and typeType UC II submarine
Displacement
  • 417 t (410 long tons), surfaced
  • 493 t (485 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
  • 7.0 knots (13.0 km/h; 8.1 mph), submerged
Range
  • 9,430 nmi (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph) surfaced
  • 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth50 m (160 ft)
Complement26
Armament
Notes35-second diving time
Service record
Part of:
  • Constantinople Flotilla
  • 6 December 1916 – 11 November 1918
Commanders:
  • Oblt.z.S. Johannes Kirchner[4]
  • 28 July 1916 - 6 July 1917
  • Kptlt. Freiherr Volkhard von Bothmer[5]
  • 5 July – 14 December 1917
  • Kptlt. Hans Georg Lübbe[6]
  • 15 December 1917 – 14 November 1918
Operations: 17 patrols
Victories:
  • 41 merchant ships sunk
    (37,752 GRT)
  • 5 auxiliary warships sunk
    (4,089 GRT)
  • 1 merchant ship damaged
    (35 GRT)
  • 2 merchant ships taken as prize
    (1,232 GRT)
  • 1 auxiliary warship taken as prize
    (327 GRT)

SM UC-23 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (‹See Tfd›German: Kaiserliche Marine) during World War I. The U-boat was ordered on 29 August 1915 and was launched on 29 February 1916. She was commissioned into the German Imperial Navy on 17 July 1916 as SM UC-23.[Note 1] In 17 patrols UC-23 was credited with sinking 46 ships, either by torpedo or by mines laid. UC-23 was surrendered at Sevastopol on 25 November 1918 and broken up at Bizerta in August 1921.[1]

  1. ^ a b c d e f Helgason, Guðmundur. "WWI U-boats: UC 23". 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: Johannes Kirchner". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 15 February 2015.
  5. ^ Helgason, Guðmundur. "WWI U-boat commanders: Freiherr Volkhard von Bothmer". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 15 February 2015.
  6. ^ Helgason, Guðmundur. "WWI U-boat commanders: Hans Georg Lübbe". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 15 February 2015.


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