SM UB-86

For other ships with the same name, see German submarine U-86.
SM UB-86 dumped after explosive trials at Falmouth, 1921.
History
German Empire
NameUB-86
Ordered23 September 1916[1]
BuilderAG Weser, Bremen
Cost3,341,000 German Papiermark
Yard number286
Laid down25 January 1917[2]
Launched10 October 1917[3]
Commissioned10 November 1917[3]
FateSurrendered 24 November 1918, used for explosive trials and dumped on beach 1920; sold for scrap 1921
General characteristics [3]
Class and typeType UB III submarine
Displacement
  • 516 t (508 long tons) surfaced
  • 647 t (637 long tons) submerged
Length55.85 m (183 ft 3 in) (o/a)
Beam5.80 m (19 ft)
Draught3.72 m (12 ft 2 in)
Propulsion
Speed
  • 13.4 knots (24.8 km/h; 15.4 mph) surfaced
  • 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range
  • 8,180 nmi (15,150 km; 9,410 mi) at 6 knots (11 km/h; 6.9 mph) surfaced
  • 50 nmi (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth50 m (160 ft)
Complement3 officers, 31 men[3]
Armament
Service record
Part of:
  • V Flotilla
  • 10 February – 5 May 1918
  • III Flotilla
  • 5 May – 11 November 1918
Commanders:
  • Kptlt. Hans Trenk[4]
  • 10 November 1917 – 11 November 1918
Operations: 5 patrols
Victories:
  • 4 merchant ships sunk
    (5,876 GRT)
  • 1 merchant ship damaged
    (1,735 GRT)
  • 1 warship damaged
    (14,150 tons)

SM UB-86 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 31 October 1917 as SM UB-86.[Note 1]

UB-86 was surrendered to the Allies at Harwich on 24 November 1918 in accordance with the requirements of the Armistice with Germany. After passing into British hands, UB-86 was towed to Falmouth along with five other U-boats [Note 2] for use in a series of explosive test trials by the Royal Navy in Falmouth Bay, in order to find weaknesses in their design. Following her use on 14 January 1921, UB-86 was dumped on Castle Beach and sold to R. Roskelly & Rodgers on 19 April 1921 for scrap (for £110), and partially salvaged over the following decades, although parts remain in situ.[5]

  1. ^ Rössler 1979, p. 55.
  2. ^ Helgason, Guðmundur. "WWI U-boats: UB 86". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 13 February 2009.
  3. ^ a b c d Gröner 1991, pp. 25–30.
  4. ^ Helgason, Guðmundur. "WWI U-boat commanders: Hans Trenk". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
  5. ^ Dodson, Aidan; Cant, Serena (2020). Spoils of War: the fate of enemy fleets after the two World Wars. Barnsley: Seaforth. pp. 50–52, 99, 129. ISBN 978-1-5267-4198-1.


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