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| | Republic P-47 - free-definition (Site not responding. Last check: 2007-11-06) |
 | | The first Seversky design was the "SEV-3" amphibian, The SEV-3 was an all-metal, low wing monoplane that was powered by Wright J-6 air-cooled radial engine, offering 420 horsepower (310 kW), and had an interesting arrangement of retractable floats that allowed it to land on water or a runway. |
 | | The Wright R-1670 had proven not powerful enough, and so, after experiments with different engine fits, the Seversky Company installed a PandW R-1830-9 Twin Wasp radial, offering 850 horsepower (630 kW) for takeoff. |
 | | It featured fully retractable landing gear, flush riveting, and most significantly a PandW R-1830-SC2G engine with a belly-mounted turbo-supercharger, offering 1,200 horsepower (890 kW) and good high-altitude performance. |
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