SM UB-40

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For other ships of the same name, see German submarine U-40.
SM UB 45.jpg
SM UB-45 a u-boat similar to UB-40
Career (German Empire)
Name: UB-40
Ordered: 22 July 1915[1]
Builder: Blohm & Voss, Hamburg[1]
Cost: 1,152,000 German Papiermark[2]
Yard number: 264[3]
Launched: 25 April 1916[3]
Completed: 18 August 1916[3]
Commissioned: 17 August 1916[4]
Fate: scuttled during the retreat from Belgium[4]
General characteristics
Class & type: German Type UB II submarine
Displacement: 274 t (270 long tons) surfaced[2]
303 t (298 long tons) submerged[2]
Length: 36.9 m (121 ft 1 in)[2]
Beam: 437 m (1,433 ft 9 in)[2]
Draft: 3.69 m (12 ft 1 in)[2]
Propulsion: 2 × propeller shafts
2 × Körting diesel engines, 284 shp (212 kW)[2]
2 × Siemens-Schuckert electric motor, 280 shp (210 kW)[2]
Speed: 9.06 knots (16.78 km/h; 10.43 mph) surfaced[2]
5.71 knots (10.57 km/h; 6.57 mph) submerged[2]
Range: 7,030 nautical miles (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced[2]
45 nmi (83 km; 52 mi) at 4 knots submerged[2]
Test depth: 50 m (160 ft)[2]
Complement: 2 officers, 21 men[2]
Armament: 2 × 50 cm (19.7 in) torpedo tubes[2]
4 × torpedoes (later 6)
1 × 5 cm SK L/40 gun[2]
Notes: 42-second diving time[2]

SM UB-40 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 25 April 1916. She was commissioned into the German Imperial Navy on 17 August 1916 as SM UB-40.[Note 1]

The submarine sank 100 ships in 28 patrols. UB-40 was scuttled in Ostende when the German army retreated from Belgium on 5 October 1918.[4]

The wreck of UB-40 is located & identified by divers in the recent years.[5]

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.

References[edit]

  1. ^ a b Rössler 1979, p. 64.
  2. ^ a b c d e f g h i j k l m n o p q Gröner 1985, p. 50.
  3. ^ a b c Rössler 1979, p. 65.
  4. ^ a b c Gröner 1985, p. 51.
  5. ^ wrecksite.eu

Bibliography[edit]


Coordinates: 51°13.5′N 2°56′E / 51.2250°N 2.933°E / 51.2250; 2.933