Designed to a 1935 requirement, and already in service for four years when Japan entered the war, the Nakajima B5N was in 1941 without question the best carrierborne torpedo-bomber in the world. Powered by a Nakajima Hikan radial engine, the low-wing three-crew monoplane with inwards-retracting wide-track landing gear was exceptionally clean, and first flew in January 1937
Très bien, Barangeru-san :-)