SM UB-70

Last updated
UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-70.
History
War Ensign of Germany 1903-1918.svg German Empire
NameUB-70
Ordered20 May 1916 [1]
Builder Friedrich Krupp Germaniawerft, Kiel
Cost3,276,000 German Papiermark
Yard number288
Launched7 August 1917 [2]
Commissioned12 October 1917 [2]
FateLost May 1918
General characteristics [2]
Class and type German Type UB III submarine
Displacement
  • 513  t (505 long tons) surfaced
  • 647 t (637 long tons) submerged
Length55.83 m (183 ft 2 in) (o/a)
Beam5.80 m (19 ft)
Draught3.67 m (12 ft 0 in)
Propulsion
Speed
  • 13.2 knots (24.4 km/h; 15.2 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range
  • 9,090  nmi (16,830 km; 10,460 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 [2]
Armament
Service record
Part of:
  • I Flotilla
  • Unknown – 5 May 1918
Commanders:
  • Kptlt. Johannes Remy [3]
  • 29 October 1917 – 5 May 1918
Operations: 2 patrols
Victories: 1 merchant ship sunk
(1,794  GRT)

SM UB-70 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 29 October 1917 as SM UB-70. [Note 1]

Contents

UB-70 was serving in the Mediterranean when she departed on her last patrol on 16 April 1918. She was last heard from on 5 May 1918 when she reported herself to be in the Mediterranean Sea east of Gibraltar. She was never seen or heard from again. Her entire crew of 33 men was lost. [4]

Construction

UB-70 was built by Friedrich Krupp Germaniawerft of Kiel and following just under a year of construction, launched at Kiel on 17 August 1917. UB-70 was commissioned later that same year under the command of Kptlt. Johannes Remy. Like all Type UB III submarines, UB-70 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-70 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,090 nautical miles (16,830 km; 10,460 mi). UB-70 had a displacement of 513  t (505 long tons) while surfaced and 647 t (637 long tons) when submerged. Her engines enabled her to travel at 13.2 knots (24.4 km/h; 15.2 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.

Summary of raiding history

DateNameNationalityTonnage [Note 2] Fate [5]
2 May 1918 Valdivia Flag of France.svg  France 1,794Sunk

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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. 28.
  2. 1 2 3 4 Gröner 1991, pp. 25–30.
  3. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Johannes Remy". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 March 2015.
  4. ↑ "UB 70". Uboat.net. Retrieved 11 November 2012.
  5. ↑ Helgason, Guðmundur. "Ships hit by UB 70". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 March 2015.

Bibliography

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