SM UB-77

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UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-77.
History
German Empire
Name: UB-77
Ordered: 23 September 1916[1]
Builder: Blohm & Voss, Hamburg
Cost: 3,338,000 German Papiermark
Yard number: 306
Launched: 5 May 1917[2]
Commissioned: 2 October 1917[2]
Fate: surrendered 16 January 1919.[2]
General characteristics [2]
Class and type: German Type UB III submarine
Displacement:
  • 516 t (508 long tons) surfaced
  • 648 t (638 long tons) submerged
Length: 55.30 m (181 ft 5 in) (o/a)
Beam: 5.80 m (19 ft)
Draught: 3.68 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 depth: 50 m (160 ft)
Complement: 3 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]

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[edit]

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[edit]

Date Name Nationality Tonnage[Note 2] Fate[5]
5 February 1918 Tuscania  United Kingdom 14,348 Sunk
31 March 1918 Celtic  United Kingdom 20,904 Damaged
28 August 1918 Lompoc  United Kingdom 7,270 Damaged

References[edit]

Notes[edit]

  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[edit]

  1. ^ Rössler 1979, p. 65.
  2. ^ a b c d e f 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[edit]

  • Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7. 
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4. 
  • Rössler, Eberhard (1979). U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 – 1945. Die deutschen U-Boote und ihre Werften (in German). I. Munich: Bernard & Graefe. ISBN 3-7637-5213-7.