seversky also built a two-seater, the 2pa. evolved in parallel with the p-35, the 2pa was a two-seat fighter and fighter-bomber with a fundamentally similar airframe and offered with either a similar undercarriage to that of the single-seater as the 2pa-l (land) or with an amphibious float undercarriage as the 2pa-a (amphibian). dubbed "convoy fighter" by the manufacturer, the 2pa was powered by a wright r-1820-g2 or g3 cyclone nine-cylinder radial engine, the former rated at 1,000 hp for take-off and the latter at 875 hp. armament comprised two wing-mounted 7.62 mm or 12.7 mm browning guns, one 7.62 mm browning on a flexible mount in the rear cockpit, plus two forward-firing fuselage-mounted 7.62 mm or 12.7 mm browning guns. provision was made for a bomb load of up to 227 kg (500 lb) on internal wing racks. one 2pa-a and one 2pa-l were procured by the soviet union in march 1938, one with conventional landing gear and one with floats, along with the manufacturing license, but it appears that the soviets never put it into production. in what proved to be an unpopular move for seversky, 20 2pa-b3s were sold to the japanese navy, which briefly employed them in the second sino-japanese war as navy type s two-seat fighter or a8v-1 (allied codename "dick"). the japanese were unimpressed with the aircraft and eventually relegated two of them to the asahi shimbun newspaper as "hacks." sweden ordered 52 2pas (swedish designation b 6), able to carry 1,350 lb (612 kg) of bombs, but received only two prior to the u.s. embargo directed to combatants. the remaining 50 were appropriated by the usaac, re-armed with 0.30 in and 0.50 in machine guns, and used as advanced trainers named at-12 guardsman.