Japanese submarine Ro-45

History
Empire of Japan
Name	Submarine No. 386
Builder	Mitsubishi, Kobe, Japan
Laid down	20 October 1942
Launched	21 July 1943
Renamed	Ro-45 on 21 July 1943
Completed	11 January 1944
Commissioned	11 January 1944
Fate	Sunk 30 April 1944
Stricken	10 July 1944
General characteristics
Class and type	Kaichū type submarine (K6 subclass)
Displacement	1,133 t (1,115 long tons) (surfaced) 1,470 tonnes (1,447 long tons) (submerged)
Length	80.5 m (264 ft 1 in) (o/a)
Beam	7 m (23 ft 0 in)
Draft	4.07 m (13 ft 4 in)
Installed power	4,200 bhp (3,100 kW) (diesel) 1,200 hp (890 kW) (electric motor)
Propulsion	Diesel-electric 1 × diesel engine 1 × electric motor
Speed	19.75 knots (36.58 km/h; 22.73 mph) (surfaced) 8 knots (15 km/h; 9.2 mph) (submerged)
Range	5,000 nmi (9,300 km; 5,800 mi) at 16 knots (30 km/h; 18 mph) (surfaced) 45 nmi (83 km; 52 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Test depth	80 m (260 ft)
Crew	61
Armament	4 × bow 533 mm (21 in) torpedo tubes 1 × 76.2 mm (3.00 in) AA gun 2 × single 25 mm (1.0 in) AA guns

Ro-45 was an Imperial Japanese Navy Kaichū type submarine of the K6 sub-class. Completed and commissioned in January 1944, she served in the central Pacific Ocean during World War II and was sunk in April 1944 during her first combat sortie.