German submarine U-1059 was a Type VIIF transport submarine of Nazi Germany's Kriegsmarine during World War II.

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History
Nazi Germany
Name	U-1059
Ordered	25 August 1941
Builder	Germaniawerft, Kiel
Yard number	693
Laid down	4 June 1942
Launched	12 March 1943
Commissioned	1 May 1943
Fate	Sunk by aircraft on 19 March 1944
General characteristics
Class and type	Type VIIF submarine
Displacement	1,084 tonnes (1,067 long tons) surfaced 1,181 t (1,162 long tons) submerged
Length	77.63 m (254 ft 8 in) o/a 60.40 m (198 ft 2 in) pressure hull
Beam	7.30 m (23 ft 11 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.91 m (16 ft 1 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts; 2 × diesel engines 2 × electric motors
Speed	16.9–17.6 knots (31.3–32.6 km/h; 19.4–20.3 mph) surfaced
Range	14,700 nmi (27,200 km; 16,900 mi) at 10 knots (19 km/h; 12 mph) surfaced 75 nmi (139 km; 86 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	200 m (660 ft) Calculated crush depth: 220–240 m (720–790 ft)
Crew	4 officers, 42 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern) 14 × torpedoes or up to 40 in transport role 1 × 3.7 centimetres (1.5 in) SK C/30 anti-aircraft gun (1,195 rounds) 2 × 2 centimetres (0.79 in) Flak anti-aircraft guns (4,380 rounds)
Service record
Part of:	5th U-boat Flotilla 1 May – 31 December 1943 12th U-boat Flotilla 1 January – 19 March 1944
Identification codes:	M 43 973
Commanders:	Oblt.z.S. Herbert Brüninghaus 1 May – 30 September 1943 Oblt.z.S. Günter Leupold 1 October 1943 – 19 March 1944
Operations:	1 patrol: 12 February – 19 March 1944
Victories:	None

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U-1059 was one of four Type VIIF torpedo transport submarines, which could carry 40 torpedoes,^[1] 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 1,084 tonnes (1,067 long tons) when at the surface and 1,181 tonnes (1,162 long tons) while submerged.^[2] She had a total length of 77.63 m (254 ft 8 in), a pressure hull length of 60.40 m (198 ft 2 in), a beam of 7.30 m (23 ft 11 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.91 m (16 ft 1 in). The submarine was powered by two Germaniawerft F46 supercharged four-stroke, six-cylinder diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two AEG GU 460/8-276 double-acting electric motors producing a total of 750 shaft horsepower (760 PS; 560 kW) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).^[2]

The submarine had a maximum surface speed of 16.9–17.6 knots (31.3–32.6 km/h; 19.4–20.3 mph) and a maximum submerged speed of 7.9 knots (14.6 km/h; 9.1 mph).^[2] When submerged, the boat could operate for 75 nautical miles (139 km; 86 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 14,700 nautical miles (27,200 km; 16,900 mi) at 10 knots (19 km/h; 12 mph). U-1059 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and various anti-aircraft gun. The boat had a normal complement of about forty-six.^[2]

While transporting torpedoes to Monsun Gruppe U-boats operating in the Far East, U-1059 was sunk on 19 March 1944 at 13°10′N 33°44′W, southwest of the Cape Verde Islands by Grumman TBF Avengers and Grumman F4F Wildcats from the escort carrier USS Block Island.^[3] Reports from the USS Corry 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.^[4] Of U-1059’s crew, 47 were killed and 8 survived the attack. The survivors were taken to Boston for medical attention.^[5]