High Quality Content by WIKIPEDIA articles! The Yokosuka H5Y (allied code name Cherry) was an Imperial Japanese Navy flying boat with a Japanese Navy designation of Type 99 Flying Boat. Only 20 were built between 1936 and 1941. Yokosuka arsenal contracted Dai-Juichi Kaigun Kokusho to perform the manufacturing. The H5Y was designed by Yokosuka to meet an Imperial Japanese Navy requirement for a twin-engine maritime reconnaissance flying boat, which was intended to match the performance of contemporary four-engine flying boats while being cheaper to build and easier to maintain. Two prototypes were built at the 11th Naval Arsenal, Hiro, being completed in 1936. The H5Y was a twin-engine parasol wing aircraft, and thus resembled a scaled-down version of the Kawanishi H6K "Mavis". Performance was found to be poor however, with the aircraft underpowered and suffering from structural problems which delayed production.

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