Mitsubishi A6M Zero A6M3 Tipo 0 Modelo 32

In 1941 Nakajima introduced the Sakae 21 engine with a two-speed supercharger, raising power to 831 kW (1,130 hp); the first prototype with this engine flew on 15 July 1941. The heavier, longer engine moved the centre of gravity forward, so the engine mounts were cut back 185 mm and the cowling redesigned. The wings were redesigned with reduced span, no folding tips and squared-off tips; the two 20 mm cannon were upgraded from Type 99 Mark 1 to Mark 2. These changes raised maximum speed by only 11 km/h over the Model 21 but cost nearly 1,000 km of range and raised the permitted diving speed to 670 km/h. The shorter range proved a serious limitation during the Guadalcanal campaign, with Rabaul-based Zeros flying near their maximum radius. Only 343 were built; one survivor is preserved at the Tachiarai Peace Memorial Museum, Fukuoka.