''The Shiun was conceived as a high-performance seaplane intended to scout the enemy where air superiority is lost or unachievable. A next-generation seaplane powered by the Mitsubishi Kasei engine with a pair of contra-rotating propellers and floats that could be jettisoned for higher speed performance, tests were inconclusive with these features. Nonetheless, these aircraft saw service aboard the light cruiser, Ooyodo. | ''The Shiun was conceived as a high-performance seaplane intended to scout the enemy where air superiority is lost or unachievable. A next-generation seaplane powered by the Mitsubishi Kasei engine with a pair of contra-rotating propellers and floats that could be jettisoned for higher speed performance, tests were inconclusive with these features. Nonetheless, these aircraft saw service aboard the light cruiser, Ooyodo. |