Characteristics
As rebuilt, Shinyo was 606 ft 11 in (184.99 m) long between perpendiculars and 621 ft 3 in (189.36 m) overall. She had a beam of 84 ft (26 m) and a draft of 26 ft 10 in (8.18 m). A 590.5 by 80.5 ft (180.0 by 24.5 m) flight deck was installed, along with a pair of elevators and a single large hangar. This arrangement allowed for 27 combat aircraft and six spare airframes, for a total of 33 aircraft.
The ship was powered by a pair of geared turbines that were supplied with steam by four boilers. The propulsion system produced 26,000 shaft horsepower (19,000 kW) and a top speed of 22 knots (41 km/h; 25 mph). At a speed of 19 kn (35 km/h; 22 mph), the ship could steam for approximately 9,000 nautical miles (17,000 km; 10,000 mi). The original high-pressure, high-temperature, oil-fired boilers proved to be highly problematic and so the Japanese replaced them shortly after Shinyo was completed. Steering was controlled by a single rudder.
Shinyo was armed with eight 127 mm (5.0 in) dual-purpose guns in four Type 89 twin mounts. She also carried thirty 25 mm (0.98 in) anti-aircraft guns in 10 triple mounts. Later, twelve additional 25 mm (0.98 in) guns in single mounts were added. When Shinyo was refitted in July 1944, eight more 25 mm guns were added, bringing the total to 50.
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