Japan was the only nation to produce and deliver into service float-equipped single-seat interceptor fighter seaplanes (the British Spitfire float adaptation did not progress beyond the experimental stage). When in 1940 the Japanese navy initiated the design of a new interceptor seaplane (the Kawanishi N1K1 Kyofu, or 'Rex'), the need was also expressed for a stopgap aircraft and the Nakajima company was instructed in February 1941 to develop a float-equipped version of the excellent Mitsubishi A6M2 Zero naval interceptor. As evidence of Japan's long-standing plans for territorial expansion through the Pacific, it had been recognized that in the inevitable 'island-hopping' war there would be few ready-made air bases from which to provide air cover during the occupation of the smaller islands, and that the construction of runways would be impractical. Although equipped with almost a dozen aircraft-carriers, the Japanese would be unable to use them in support of every single island invasion.

After removing the wheel landing gear and fairing over the wheel wells of a standard A6M2, Nakajima mounted a large float under the fuselage by means of a forward-raked central pylon and a pair of V-struts below the cockpit; two cantilever stabilizing floats were also mounted under the wings. The standard Zero gun armament was retained, and the first prototype was flown on 7 December 1941, the day on which the Japanese navy attacked Pearl Harbor.

Entering production as the Nakajima A6M2-N and codenamed 'Rufe' by the Allies, the new fighter still displayed a creditable performance, being first issued to the Yokohama Kokutai and deployed to Tulagi in the Solomons where the Japanese had first landed during the Battle of the Coral Sea. However, almost all the 'Rufes' were destroyed in a strike on the seaplane base by 15 Grumman F4Fs from USS Wasp on 7 August 1942. Better success attended the 'Rufes' which fought in the later Aleutian campaign, but losses soared as soon as American fighter strength could be built up. During the final year of the war, when American heavy bombers and naval aircraft opened their great attacks on the Japanese homeland, 'Rufes' of the Otsu Kokutai, based on Lake Biwa, were thrown into the battle as interceptors in defence of Central Honshu but suffered very heavy losses. Total production of 'Rufe' amounted to 327 before being halted in September 1943.

3-View

A three-view drawing (752 x 1146)