SM UB-68[Note 1] was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 20 May 1916. She was commissioned into the German Imperial Navy on 5 October 1917 as SM UB-68. The submarine conducted five patrols and sank five ships during the war. Under the command of Karl Dönitz, on 4 October 1918 UB-68 encountered technical problems and had to surface where she was sunk by gunfire at 33°56′N 16°20′E / 33.933°N 16.333°E / 33.933; 16.333. There was one dead and thirty-three survivors.[3] Other sources name the British warships involved in the sinking of UB-68 as HMS Snapdragon and HMS Cradosin, and claim four crew members died in the event.[4]

History
German Empire
NameUB-68
Ordered20 May 1916[2][3]
BuilderFriedrich Krupp Germaniawerft, Kiel
Cost3,276,000 German Papiermark
Yard number286
Launched4 July 1917[1]
Commissioned5 October 1917[1]
FateSunk 4 October 1918[1]
General characteristics [1]
Class and typeGerman Type UB III submarine
Displacement
  • 513 t (505 long tons) surfaced
  • 647 t (637 long tons) submerged
Length55.83 m (183 ft 2 in) (o/a)
Beam5.80 m (19 ft)
Draught3.67 m (12 ft 0 in)
Propulsion
Speed
  • 13.2 knots (24.4 km/h; 15.2 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range
  • 9,090 nmi (16,830 km; 10,460 mi) at 6 knots (11 km/h; 6.9 mph) surfaced
  • 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth50 m (160 ft)
Complement3 officers, 31 men[1]
Armament
Notes30-second diving time
Service record
Part of:
  • Mittelmeer I Flotilla[3]
  • 8 January – 4 October 1918
Commanders:
Operations: 5 patrols[3]
Victories:
  • 5 merchant ships sunk
    (10,709 GRT)
  • 4 merchant ships damaged
    (23,788 GRT)[3]

Summary of raiding history edit

Date Name Nationality Tonnage[Note 2] Fate[5]
10 April 1918 Warwickshire   United Kingdom 8,012 Damaged
11 April 1918 Kingstonian   United Kingdom 6,564 Damaged
13 April 1918 Provence III   France 3,941 Damaged
26 April 1918 Angelina Di Paola   Italy 228 Sunk
1 June 1918 Angelina   Italy 1,260 Sunk
3 June 1918 Glaucus   United Kingdom 5,295 Sunk
12 June 1918 Monginevro   Italy 5,271 Damaged
24 June 1918 Saint Antoine   France 43 Sunk
4 October 1918 Oopack   United Kingdom 3,883 Sunk

Notes edit

  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.
  2. ^ Tonnages are in gross register tons

References edit

  1. ^ a b c d e Gröner 1991, pp. 25–30.
  2. ^ Rössler 1979, p. 27.
  3. ^ a b c d e f g Helgason, Guðmundur. "WWI U-boats: UB 68". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 30 August 2009.
  4. ^ Gröner, p.54
  5. ^ Helgason, Guðmundur. "Ships hit by UB 68". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 6 December 2014.

Bibliography edit