SM UB-84

UB-148 at sea, a U-boat similar to UB-84
History
German Empire
NameUB-84
Ordered23 September 1916
BuilderAG Weser, Bremen
Cost3,341,000 German Papiermark
Yard number284
Laid down21 January 1917
Launched3 October 1917
Commissioned31 October 1917
FateLost in collision, 7 December 1917 at 54°35′N 10°11′E / 54.583°N 10.183°E / 54.583; 10.183, raised, training boat, surrendered 26 November 1918, broken up
General characteristics
Class & 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
Armament
Service record
Commanders:
  • Kptlt. Max Bräutigam
  • 31 October – 1 December 1917
Operations: No patrols
Victories: None

SM UB-84 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-84. UB-84 was lost in a collision on 7 December 1917 in the Baltic Sea at 54°35′N 10°11′E / 54.583°N 10.183°E / 54.583; 10.183.

She was later raised and used as a training boat. On 26 November 1918 she was surrendered to the French in accordance with the requirements of the Armistice with Germany and broken up in Brest in 1921.