SM U-166

SM U-166[Note 1] was one of the 329 submarines serving in the Imperial German Navy. She was a Type Mittel U submarine, launched in 1918. She was engaged in the naval warfare of World War I and took part in the First Battle of the Atlantic. She surrendered on 21 March 1919 and became the French submarine Jean Roulier until 24 July 1935. U-166 was broken up.[2]

For other ships with the same name, see German submarine U-166.
History
German Empire
Name: U-166
Ordered: 27 June 1917
Builder: Bremer Vulkan, Vegesack
Launched: 6 September 1918
Commissioned: 21 March 1919
Out of service: 24 July 1935
Renamed: Jean Roulier
General characteristics [1]
Class and type: German Type U 93 submarine
Displacement:
  • 821 t (808 long tons) surfaced
  • 1,002 t (986 long tons) submerged
Length:
Beam:
  • 6.30 m (20 ft 8 in) (o/a)
  • 4.15 m (13 ft 7 in) (pressure hull)
Height: 8.25 m (27 ft 1 in)
Draught: 3.88 m (12 ft 9 in)
Installed power:
  • 2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced
  • 2 × 1,230 PS (905 kW; 1,213 shp) submerged
Propulsion: 2 shafts, 2 × 1.70 m (5 ft 7 in) propellers
Speed:
  • 16.2 knots (30.0 km/h; 18.6 mph) surfaced
  • 8.2 knots (15.2 km/h; 9.4 mph) submerged
Range:
  • 8,500 nmi (15,700 km; 9,800 mi) at 8 knots (15 km/h; 9.2 mph) surfaced
  • 50 nmi (93 km; 58 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth: 50 m (160 ft)
Complement: 4 officers, 32 enlisted
Armament:

Design

German Type U 93 submarines were preceded by the shorter Type U 87 submarines. U-166 had a displacement of 821 tonnes (808 long tons) when at the surface and 1,002 tonnes (986 long tons) while submerged.[1] She had a total length of 71.55 metres (234 ft 9 in), a pressure hull length of 56.05 m (183 ft 11 in), a beam of 6.30 m (20 ft 8 in), a height of 8.25 m (27 ft 1 in), and a draught of 3.88 m (12 ft 9 in). The submarine was powered by two 2,400 metric horsepower (1,800 kW; 2,400 shp) engines for use while surfaced, and two 1,230 metric horsepower (900 kW; 1,210 shp) engines for use while submerged. She had two propeller shafts and two 1.70 m (5 ft 7 in) propellers. She was capable of operating at depths of up to 50 metres (160 ft).[1]

The submarine had a maximum surface speed of 16.2 knots (30.0 km/h; 18.6 mph) and a maximum submerged speed of 8.2 knots (15.2 km/h; 9.4 mph).[1] When submerged, she could operate for 50 nautical miles (93 km; 58 mi) at 5 knots (9.3 km/h; 5.8 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 8 knots (15 km/h; 9.2 mph). U-166 was fitted with six 50 centimetres (20 in) torpedo tubes (four at the bow and two at the stern), twelve to sixteen torpedoes, and one 10.5 cm (4.1 in) SK L/45 deck gun. She had a complement of thirty-six (thirty-two crew members and four officers).[1]

References

Notes
  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. Gröner 1991, pp. 12-14.
  2. Helgason, Guðmundur. "WWI U-boats: U 166". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 January 2010.

Bibliography
  • 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.

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