Name U-54 Ordered 23 August 1914 Builder Germaniawerft, Kiel Yard number 236 Laid down 18 March 1915 Launched 22 February 1916 Commissioned 25 May 1916 Fate 24 November 1918 - Surrendered to Italy. Broken up at Taranto in May 1919. [ 1] Class & type Type U 51 submarine Displacement 715 t (704 long tons ) surfaced 902 t (888 long tons) submerged Length Beam 6.44 m (21 ft 2 in) (oa) 4.18 m (13 ft 9 in) (pressure hull) Height 7.82 m (25 ft 8 in) Draught 3.64 m (11 ft 11 in) Installed power 2 × 2,400 PS (1,765 kW ; 2,367 shp ) surfaced 2 × 1,200 PS (883 kW; 1,184 shp) submerged Propulsion 2 shafts Speed 17.1 knots (31.7 km/h; 19.7 mph) surfaced 9.1 knots (16.9 km/h; 10.5 mph) submerged Range 9,400 nmi (17,400 km; 10,800 mi) at 8 knots (15 km/h; 9.2 mph) surfaced 55 nmi (102 km; 63 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged Test depth 50 m (164 ft 1 in) Complement 36 Armament Part of II Flotilla 2 July 1916 – 11 November 1918 Commanders Kptlt. Freiherr Volkhard von Bothmer [ 3] 16 May 1916 – 19 May 1917 Kptlt. Kurt Heeseler [ 4] 20 May 1917 – 22 March 1918 Oblt.z.S. Hellmuth von Ruckteschell [ 5] 23 March – 11 November 1918 Operations 12 patrols Victories 26 merchant ships sunk (66,713 GRT ) 1 warship sunk (1,290 tons) 3 merchant ships damaged (15,362 GRT ) 1 auxiliary warship damaged (2,485 GRT )