Japanese submarine Ro-59

History
Japan
Name	Submarine No. 57
Builder	Mitsubishi, Kobe, Japan
Laid down	18 May 1921
Launched	28 June 1922
Completed	20 March 1923
Commissioned	20 March 1923
Renamed	Ro-59 on 1 November 1924
Decommissioned	1 November 1938
Recommissioned	1 June 1939
Decommissioned	15 November 1939
Recommissioned	1 November 1941
Decommissioned	1 May 1945
Stricken	1 May 1945
Fate	Hulked 1 May 1945 Scrapped 1946
General characteristics
Class and type	Japanese Type L submarine (L3 subclass)
Displacement	903 tonnes (889 long tons) surfaced 1,120 tonnes (1,102.7 long tons) submerged
Length	72.89 m (239 ft 2 in) overall
Beam	7.16 m (23 ft 6 in)
Draft	3.96 m (13 ft 0 in)
Installed power	2,400 bhp (1,800 kW) (diesel) 1,600 shp (1,200 kW) (electric motor)
Propulsion	Diesel-electric 2 × Vickers diesel engines, 75 tons fuel 2 × electric motor 2 x 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	5,500 nmi (10,200 km; 6,300 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	60 m (197 ft)
Crew	46
Armament	4 × bow 533 mm (21.0 in) torpedo tubes 8 x 6th Year Type torpedoes 1 × 76.2 mm (3 in) gun 1 x 6.5 mm machine gun

Ro-59, originally named Submarine No. 57, was an Imperial Japanese Navy Type L submarine of the L3 subclass. She was in commission from 1923 to 1938, in 1939, and from 1941 to 1945. During World War II, she served on training duties in Japan.