SM UB-78

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For other ships of the same name, see German submarine U-78.
UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-78.
Career (German Empire)
Name: UB-78
Ordered: 23 September 1916[1]
Builder: Blohm & Voss, Hamburg[2]
Cost: 3,338,000 German Papiermark[2]
Yard number: 307[2]
Launched: 2 June 1917[3]
Commissioned: 20 October 1917[3]
Fate: sunk 9 May 1918 off Cherbourg by ramming and depth charges at 49°49′N 1°30′W / 49.817°N 1.500°W / 49.817; -1.500Coordinates: 49°49′N 1°30′W / 49.817°N 1.500°W / 49.817; -1.500.[3]
General characteristics
Class & type: German Type UB III 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:
Commanders:

SM UB-78 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 20 October 1917 as SM UB-78.[nb 1]

UB-78 was sunk on 9 May 1918 off Cherbourg after ramming and depth charging by TS Queen Alexandra, all 35 crew member died in the event.[3]

Construction[edit]

She was built by Blohm & Voss of Hamburg[2] and following just under a year of construction, launched at Hamburg on 2 June 1917. UB-78 was commissioned later that same year . Like all Type UB III submarines, UB-78 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-78 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-78 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[edit]

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. ^ a b c d e f g h i j k l m n Gröner 1985, p. 52.
  3. ^ a b c d Gröner 1985, p. 54.
  4. ^ a b c d e Gröner 1985, p. 53.


References[edit]