German submarine U-999
German submarine U-999 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.
She was ordered on 14 October 1941, and was laid down on 19 December 1942, at Blohm & Voss, Hamburg, as yard number 199. She was launched on 17 September 1943, and commissioned under the command of Oberleutnant zur See Hermann Hansen on 21 October 1943.
Design
German Type VIIC/41 submarines were preceded by the heavier Type VIIC submarines. U-999 had a displacement of when at the surface and while submerged. She had a total length of, a pressure hull length of, an overall beam of, a height of, and a draught of. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two BBC GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat 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, the boat could operate for at ; when surfaced, she could travel at. U-999 was fitted with five torpedo tubes, fourteen torpedoes, one SK C/35 naval gun,, one Flak M42 and two C/30 anti-aircraft guns. The boat had a complement of between forty-four and fifty-two.