SM UB-77

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]

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

Citations

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.