U-20 Specifications

Type U 19 class
Displacement 650 tons (surface)
827 tons (submerged)
Length 64.2 meters / 210.6 feet
Beam 6.1 meters / 20.0 feet
Draft 3.6 meters / 11.8 feet
Speed 28.7 km/h / 15.5 knots (surface)
17.6 km/h / 9.5 knots (submerged)
Range 9,800 km / 5,300 nautical miles at 15 km/h / 8.1 knots
Armament – Four 50 cm / 19.7 inch torpedo tubes (two bow, two stern, nine torpedoes)
– 1 x 88 mm / 3.46 inch deck gun (two guns from 1916)
Shipyard Kaiserliche Werft, Danzig (Werk 14)
Ordered 25 November 1910
Laid down 7 November 1911
Launched 18 December 1912
Commissioned 5 August 1913
Commanders – Otto Dröscher (1 August 1914 – 15 December 1914)
– Walther Schwieger (16 December 1914 – 5 November 1916)
Career 7 patrols (1 August 1914 – 4 November 1916), Kaiserliche Marine: III Flotille
Successes – 37 ships sunk (145,830 tons)
– 2 ships damaged (2,643 tons)
Fate Grounded 4 November 1916 on Danish coast at 56°33′N 08°08′E and destroyed by her crew the next day


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