SM U-29 (Austria-Hungary)

SM U-29 was a coastal submarine of the Austro-Hungarian Navy during World War I. She was one of six U-27-class submarines, a class designed by the Germaniawerft shipyard of Kiel, Germany, and built under license in Austria-Hungary.

U-29 displaced 278 tons surfaced and 325 tons submerged. She was 42.05 meters (137 ft 11 in) in length overall, with a beam of 3.66 meters (12 ft 0 in) and a draft of 3.04 meters (10 ft 0 in). Propulsion consisted of two MAN diesel engines totaling 600 horsepower (450 kW) for surface running and two Siemens-Schuckert electric motors totaling 420 shp (310 kW) for submerged running. These provided a surfaced speed of 9 knots (17 km/h; 10 mph) and a submerged speed of 6.25 knots (11.58 km/h; 7.19 mph).

U-29 was armed with two 45 cm (17.7 in) torpedo tubes located in the bow. She typically carried four torpedoes. She also mounted a 7.6 cm (3 in) /30 caliber deck gun for surface engagements.

The submarine was launched on 21 November 1916 and commissioned on 23 January 1917. She served primarily in the Adriatic Sea, conducting patrols and engaging in anti-shipping operations. Her wartime record is relatively unremarkable, with no confirmed sinkings of enemy vessels.

Following the end of World War I, U-29 was surrendered to Italy as part of the reparations agreement. She was scrapped in Italy in 1920.