SM ''U-166'') and combined with the ''U'' for ''Unterseeboot'' would be translated as ''His Majesty's Submarine''., group=Note was one of the 329 submarines serving in the

Imperial German Navy The Imperial German Navy or the Imperial Navy () was the navy of the German Empire, which existed between 1871 and 1919. It grew out of the small Prussian Navy (from 1867 the North German Federal Navy), which was mainly for coast defence. Kaise ...

. She was a Type Mittel U submarine, launched in 1918. She would have been engaged in naval warfare and taken part in the

First Battle of the Atlantic The Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atla ...

, but it was not commissioned until the end of the war. She surrendered on 21 March 1919 and became the French submarine ''Jean Roulier'' until 24 July 1935. ''U-166'' was broken up.

Design

German Type U 93 submarines were preceded by the shorter Type U 87 submarines. ''U-166'' had a displacement of when at the surface and while submerged. She had a total length of , a

pressure hull A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure ...

length of , a beam of , a height of , and a draught of . The submarine was powered by two engines for use while surfaced, and two engines for use while submerged. She had two propeller shafts and two propellers. She was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, she could operate for at ; when surfaced, she could travel at . ''U-166'' was fitted with six

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s (four at the bow and two at the stern), twelve to sixteen torpedoes, and one SK L/45

deck gun A deck gun is a type of naval artillery mounted on the deck of a submarine. Most submarine deck guns were open, with or without a shield; however, a few larger submarines placed these guns in a turret. The main deck gun was a dual-purpose ...

. She had a

complement A complement is something that completes something else. Complement may refer specifically to: The arts * Complement (music), an interval that, when added to another, spans an octave ** Aggregate complementation, the separation of pitch-clas ...

of thirty-six (thirty-two crew members and four officers).

References

Notes

Citations

Bibliography

* {{DEFAULTSORT:U0166 World War I submarines of Germany German Type U 93 submarines Ships built in Bremen (state) 1918 ships U-boats commissioned in 1919 Foreign submarines in French service