SM UB-90

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For other ships with the same name, see German submarine U-90.
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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Main article: German Type UB III submarine

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

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Citations

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Bibliography

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  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.


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