Japanese submarine Ro-30

History
Japan
Name	Submarine No. 69
Builder	Kawasaki, Kobe, Japan
Laid down	27 June 1921
Launched	18 January 1923
Completed	29 April 1924
Commissioned	29 April 1924
Renamed	Ro-30 on 1 November 1924
Decommissioned	15 December 1938
Stricken	1 April 1942
Fate	Hulked 1 April 1942 Scrapped ca. August 1945
General characteristics
Class and type	Kaichū type submarine (K5 subclass)
Displacement	866 tonnes (852 long tons) surfaced 1,047 tonnes (1,030 long tons) submerged
Length	74.22 m (243 ft 6 in) overall
Beam	6.12 m (20 ft 1 in)
Draft	3.73 m (12 ft 3 in)
Installed power	1,200 bhp (890 kW) (diesel) 1,200 hp (890 kW) (electric motor)
Propulsion	Diesel-electric 2 × Sulzer Mark I diesel engine, 143 tons fuel 2 × electric motor
Speed	13 knots (24 km/h; 15 mph) surfaced 8.5 knots (15.7 km/h; 9.8 mph) submerged
Range	9,000 nmi (17,000 km; 10,000 mi) at 10 knots (19 km/h; 12 mph) surfaced 85 nmi (157 km; 98 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	45.7 m (150 ft)
Crew	44
Armament	4 × bow 533 mm (21 in) torpedo tubes 1 × 120 mm (4.7 in) gun 1 × 6.5 mm machine gun

Ro-30, originally named Submarine No. 69, was an Imperial Japanese Navy Kaichu-Type submarine of the Kaichu V (Toku Chu) subclass. She was in commission from 1924 to 1938, seeing service in the waters of Formosa and Japan, then served as a stationary training hulk during World War II.