SM UB-77

Last updated
NH 111083 German Submarine UB-77.jpg
SM UB-77 in Wilhelmshaven
History
War Ensign of Germany 1903-1918.svg German Empire
NameUB-77
Ordered23 September 1916 [1]
Builder Blohm & Voss, Hamburg
Cost3,338,000 German Papiermark
Yard number306
Launched5 May 1917 [2]
Commissioned2 October 1917 [2]
FateSurrendered 16 January 1919. [2]
General characteristics [2]
Class and type Type UB III submarine
Displacement
  • 516  t (508 long tons) surfaced
  • 648 t (638 long tons) submerged
Length55.30 m (181 ft 5 in) (o/a)
Beam5.80 m (19 ft)
Draught3.68 m (12 ft 1 in)
Propulsion
Speed
  • 13.6 knots (25.2 km/h; 15.7 mph) surfaced
  • 7.8 knots (14.4 km/h; 9.0 mph) submerged
Range
  • 8,680 nmi (16,080 km; 9,990 mi) at 8 knots (15 km/h; 9.2 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:
  • V Flotilla
  • 30 November 1917 – 17 April 1918
  • I Flotilla
  • 17 April – 11 November 1918
Commanders:
  • Kptlt. Wilhelm Meyer [3]
  • 2 October 1917 – 14 June 1918
  • Oblt.z.S. Franz Maurer [4]
  • 15 June – 11 November 1918
Operations: 7 patrols
Victories:
  • 1 merchant ship sunk
    (14,348  GRT)
  • 2 merchant ships damaged
    (28,174  GRT)

SM UB-77 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 2 October 1917 as SM UB-77. [Note 1]

Contents

UB-77 was surrendered on 16 January 1919 in accordance with the requirements of the Armistice with Germany and broken up in Swansea in 1921. [2]

Construction

UB-77 was ordered by the GIN on 23 September 1916.

She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 5 May 1917. UB-77 was commissioned later that same year under the command of Kptlt. Wilhelm Meyer. Like all Type UB III submarines, UB-77 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-77 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,680 nautical miles (16,080 km; 9,990 mi). UB-77 had a displacement of 516  t (508 long tons) while surfaced and 648 t (638 long tons) when submerged. Her engines enabled her to travel at 13.6 knots (25.2 km/h; 15.7 mph) when surfaced and 7.8 knots (14.4 km/h; 9.0 mph) when submerged.

Summary of raiding history

DateNameNationalityTonnage [Note 2] Fate [5]
5 February 1918 Tuscania Civil Ensign of the United Kingdom.svg  United Kingdom 14,348Sunk
31 March 1918 Celtic Government Ensign of the United Kingdom.svg  United Kingdom 20,904Damaged
28 August 1918 Lompoc Civil Ensign of the United Kingdom.svg  United Kingdom 7,270Damaged

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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. 65.
  2. 1 2 3 4 5 6 Gröner 1991, pp. 25–30.
  3. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Wilhelm Meyer". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
  4. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Franz Maurer". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
  5. ↑ Helgason, Guðmundur. "Ships hit by UB 77". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.

Bibliography

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