Jun'yō (隼鷹, "Peregrine Falcon") was a Hiyō-class aircraft carrier of the Imperial Japanese Navy (IJN). The ship was ordered in late 1938 as the fast luxury passenger liner Kashiwara Maru by Nippon Yusen Kaisha (the Japan Mail Steamship Company). In exchange for a 60 percent subsidy of her building costs by the Navy Ministry, she was designed to be converted to an auxiliary aircraft carrier, one of 10 such ships subsidized by the IJN.
Jun'yō had an overall length of 219.32 meters (719 ft 7 in), a beamof 26.7 meters (87 ft 7 in) and a draft of 8.15 meters (26 ft 9 in). She displaced 24,150 metric tons (23,770 long tons) at standard load. Her crew ranged from 1,187 to 1,224 officers and men.The ship was fitted with two Mitsubishi-Curtis geared steam turbinesets with a total of 56,250 shaft horsepower (41,950 kW), each driving one propeller shaft, using steam provided by six Mitsubishi three-drum water-tube boilers. Jun'yō had a designed speed of 25.5 knots (47.2 km/h; 29.3 mph), but reached 26 knots (48 km/h; 30 mph) during her sea trials. The ship carried 4,100 metric tons (4,000 long tons) of fuel oil, which gave her a range of 12,251 nautical miles (22,689 km; 14,098 mi) at 18 knots (33 km/h; 21 mph).