As one of the first ten German Type VII submarines later designated as Type VIIA submarines, U-29 had a displacement of 626 tonnes (616 long tons) when at the surface and 745 tonnes (733 long tons) while submerged.[3] She had a total length of 64.51 m (211 ft 8 in), a pressure hull length of 45.50 m (149 ft 3 in), a beam of 5.85 m (19 ft 2 in), a height of 9.50 m (31 ft 2 in), and a draught of 4.37 m (14 ft 4 in). The submarine was powered by two MAN M 6 V 40/46 four-stroke, six-cylinder diesel engines producing a total of 2,100 to 2,310 metric horsepower (1,540 to 1,700 kW; 2,070 to 2,280 shp) for use while surfaced, two BBC GG UB 720/8double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) 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).[3]
The submarine had a maximum surface speed of 17 knots (31 km/h; 20 mph) and a maximum submerged speed of 8 knots (15 km/h; 9.2 mph).[3] When submerged, the boat could operate for 73–94 nautical miles (135–174 km; 84–108 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 6,200 nautical miles (11,500 km; 7,100 mi) at 10 knots (19 km/h; 12 mph). U-29 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), eleven torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. The boat had a complement of between forty-four and sixty.[3]
U-29 was responsible for sinking the aircraft carrierHMS Courageous, on 17 September 1939, the first British warship sunk in the war by enemy action. The commander of the German submarine force, Commodore Karl Dönitz, regarded the sinking of Courageous as "a wonderful success" and Grand Admiral Erich Raeder, commander of the Kriegsmarine (German navy), directed that Schuhart be awarded the Iron Cross First Class and that all other members of the U-29 crew receive the Iron Cross Second Class.[4]
During U-29's career, she sank twelve ships, totaling 67,277 gross register tons (GRT) and one warship of 22,500 tons. At the beginning of 1941, U-29 was removed from front line duty and reassigned to the 24th U-boat Flotilla as a training submarine. The U-boat was used in this role until 17 April 1944 when she was decommissioned and used for instruction.[5]
Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN1-55750-186-6.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN0-85177-593-4.
Neistlé, Axel (2014). German U-Boat Losses during World War II: Details of Destruction (2nd ed.). Havertown: Frontline Books.