SM UB-90

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UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-90.
History
German Empire
Name: UB-90
Ordered: 6/8 February 1917[1]
Builder: AG Vulcan, Hamburg
Cost: 3,654,000 German Papiermark
Yard number: 106
Launched: 12 February 1918[2]
Commissioned: 21 March 1918[2]
Fate: sunk 16 October 1918 by British submarine[2]
General characteristics [2]
Class & type: German Type UB III submarine
Displacement:
  • 510 t (500 long tons) surfaced
  • 640 t (630 long tons) submerged
Length: 55.52 m (182 ft 2 in) (o/a)
Beam: 5.76 m (18 ft 11 in)
Draught: 3.73 m (12 ft 3 in)
Propulsion:
Speed:
  • 13 knots (24 km/h; 15 mph) surfaced
  • 7.4 knots (13.7 km/h; 8.5 mph) submerged
Range:
  • 7,120 nmi (13,190 km; 8,190 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 depth: 50 m (160 ft)
Complement: 3 officers, 31 men[2]
Armament:
Service record
Part of:
  • II Flotilla
  • 29 June – 16 October 1918
Commanders:
  • Oblt.z.S. Gottfried von Mayer[3]
  • 21 March – 16 October 1918
Operations: 2 patrols
Victories:
  • 1 merchant ship sunk (3,575 GRT)
  • 1 merchant ship captured as a prize (850 GRT)

SM UB-90 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 21 March 1918 as SM UB-90.[Note 1]

On 16 October 1918, UB-90 was hit by a torpedo from HMS L12 at Lua error in package.lua at line 80: module 'strict' not found. and sunk. All 38 crew members died in the event.[2]

Construction

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She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 12 February 1918. UB-90 was commissioned early the next year under the command of Oblt.z.S. Gottfried von Mayer. Like all Type UB III submarines, UB-90 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-90 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,120 nautical miles (13,190 km; 8,190 mi). UB-90 had a displacement of 510 t (500 long tons) while surfaced and 640 t (630 long tons) when submerged. Her engines enabled her to travel at 13 knots (24 km/h; 15 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.

Summary of raiding history

Date Name Nationality Tonnage[Note 2] Fate[4]
29 July 1918 Douro  Denmark 850 Captured as a prize
3 October 1918 Eupion  United Kingdom 3,575 Sunk

References

Notes

  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

Citations

  1. Rössler 1979, p. 61.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Gröner 1991, pp. 25-30.
  3. Lua error in package.lua at line 80: module 'strict' not found.
  4. Lua error in package.lua at line 80: module 'strict' not found.

Bibliography

  • Lua error in package.lua at line 80: module 'strict' not found.
  • Lua error in package.lua at line 80: module 'strict' not found.
  • Lua error in package.lua at line 80: module 'strict' not found.