SM UB-77

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UB-148 at sea, a U-boat similar to UB-77.
Career (German Empire)
Name: UB-77
Ordered: 23 September 1916[1]
Builder: Blohm & Voss, Hamburg[2]
Cost: 3,338,000 German Papiermark[2]
Yard number: 306[2]
Launched: 5 May 1917[3]
Commissioned: 2 October 1917[3]
Fate: surrendered 16 January 1919.[3]
General characteristics
Class & type: German Type UB III submarine
Type: Coastal submarine
Displacement: 516 t (508 long tons; 569 short tons) surfaced
648 t (638 long tons; 714 short tons) submerged[2]
Length: 55.3 m (181 ft) o/a[2]
Beam: 5.8 m (19 ft)[2]
Draught: 3.68 m (12.1 ft)[2]
Propulsion: 2 shafts
6-cylinder MAN diesel engines,[4] 1,100 ihp (820 kW)
Siemens-Schuckert[4] electric motors, 788 ihp (588 kW)[2]
Speed: 13.6 knots (25.2 km/h; 15.7 mph) surfaced
7.8 knots (14.4 km/h; 9.0 mph) submerged[2]
Range: 8,680 nmi (16,080 km; 9,990 mi) at 8 kn (15 km/h; 9.2 mph) surfaced
55 nmi (102 km; 63 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[2]
Test depth: 50 m (160 ft)[4]
Complement: 3 officers, 31 men[4]
Armament: • 5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes
• 1 × 8.8 cm (3.46 in) deck gun[4]
Service record
Part of:

German Imperial Navy[2]

Commanders:

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.[nb 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.[3]

Construction

She was built by Blohm & Voss of Hamburg[2] and following just under a year of construction, launched at Hamburg on 5 May 1917. UB-77 was commissioned later that same year . 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).[2] UB-77 had a displacement of 516 t (508 long tons; 569 short tons) while surfaced and 648 t (638 long tons; 714 short 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.[2]


Notes

Footnotes
  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.
Citations
  1. Rössler 1979, p. 65.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 Gröner 1985, p. 52.
  3. 3.0 3.1 3.2 3.3 Gröner 1985, p. 54.
  4. 4.0 4.1 4.2 4.3 4.4 Gröner 1985, p. 53.


References

  • Gröner, Erich (1985). "U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher". Die deutschen Kriegsschiffe, 1815-1945 III (Koblenz: Bernhard&Graefe). ISBN 3-7637-4802-4. 
  • Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal. Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7. 
  • 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 I (Munich: Bernhard&Graefe). ISBN 3-7637-5213-7. 
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