German submarine U-1059 was a Type VIIF transport submarine of Nazi Germany's Kriegsmarine during World War II.
U-1059 was one of four Type VIIF torpedo transport submarines, which could carry 40 torpedoes, and were used to re-supply other U-boats at sea. U-1059 commissioned on 1 May 1943, first served with 5th U-boat Flotilla for training, and later served with 12th U-boat Flotilla from 1 January 1944 until 19 March 1944. U-1059 completed one torpedo transport patrol.
As one of the four German Type VIIF submarines, U-1059 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 Germaniawerft F46 supercharged four-stroke, six-cylinder diesel engines producing a total of for use while surfaced, two AEG GU 460/8-276 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-1059 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and various anti-aircraft gun. The boat had a normal complement of about forty-six.
While transporting torpedoes to Monsun Gruppe U-boats operating in the Far East, U-1059 was sunk on 19 March 1944 at , southwest of the Cape Verde Islands by Grumman TBF Avengers and Grumman F4F Wildcats from the escort carrier . Reports from the are that initially there were 20 survivors, but because there were reports of a second U-boat in the area, the Corry was forced to stay away. Of U-1059âÂÂs crew, 47 were killed and 8 survived the attack. The survivors were taken to Boston for medical attention.