SM U-99


SM U-99 was one of the 329 submarines serving in the Imperial German Navy in World War I.
U-99 was engaged in the naval warfare and took part in the First Battle of the Atlantic.

Design

U-99 had a displacement of when at the surface and while submerged. She had a total length of, a pressure hull 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. 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-99 was fitted with four torpedo tubes, ten to twelve torpedoes, and one SK L/45 deck gun. She had a complement of thirty-six.

Fate

U-99 sailed on 12 June 1917 with further contact after 13 June; she went missing after 7 July.

Previously recorded fate

U-99 was thought to have been sunk by British submarine, but the attack was conducted at extreme range and is unlikely to have accounted for U-99.