SM UB-115

UB-148 at sea, a U-boat similar to UB-115.
History
German Empire
NameUB-115
Ordered6 / 8 February 1917
BuilderBlohm & Voss, Hamburg
Cost3,714,000 German Papiermark
Yard number321
Launched4 November 1917
Commissioned28 May 1918
FateSunk 29 September 1918 by British warships and aircraft at 55°13′N 1°22′W / 55.217°N 1.367°W / 55.217; -1.367
General characteristics
Class & typeType UB III submarine
Displacement
  • 519 t (511 long tons) surfaced
  • 649 t (639 long tons) submerged
Length55.30 m (181 ft 5 in) (o/a)
Beam5.80 m (19 ft)
Draught3.70 m (12 ft 2 in)
Propulsion
Speed
  • 13.3 knots (24.6 km/h; 15.3 mph) surfaced
  • 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range
  • 7,420 nmi (13,740 km; 8,540 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
Armament
Service record
Part of:
Commanders:
  • Oblt.z.S. Reinhold Thomsen
  • 28 May – 29 September 1918
Operations: 2 patrols
Victories: 1 merchant ship sunk
(336 GRT)

SM UB-115 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 28 May 1918 as SM UB-115. She was the only German submarine commissioned with the number 115.

UB-115 was sunk by British warships, including HMS Ouse and HMS Star, and the rigid airship R29 at 55°13′N 1°22′W / 55.217°N 1.367°W / 55.217; -1.367 using depth charges and aerial bombs.