1/72 Scale Nakajima B5N2 "Kate." Airfix. The three-man Nakajima B5N2, dubbed the "Kate" by the Allies, was the most numerous Japanese torpedo bomber of World War II. Although it primarily operated from carriers as a torpedo bomber, the aircraft also saw service as a land based bomber. Faster and more potent than the Interwar TBD Devastator, Fairey Swordfish, and Fairey Albacore, this Japanese single-engine monoplane was nearing obsolescence by 1941. It was defended by just one rearward firing machine gun fired by the radio operator. This configuration together with the speed left it vulnerable to more modern enemy fighters. Delays in the fielding of its successor left the B5N2 to fight on against the odds throughout the war. The "Kate" perfomed well at Pearl Harbour and enjoyed success at the Battle of the Coral Sea and Midway.