Convair Sea Dart was a unique American seaplane fighter aircraft that rode on twin hydro-skis for takeoff. It flew only as a prototype, and never entered production. It is the only seaplane so far to have exceeded the speed of sound (in shallow dive).
Great flying shots of this aircraft in the 1954 movie "Toward The Unknown" Starring William Holden as Major Lincoln Bond and Lloyd Nolan s General Bill Banner.The Martin stood in as the Gilbert Experimental Fighter (U.
North American rocket-powered aircraft - North American Aviation USAF, NASA Envelope: Hypersonic (Mach high-altitude feet m)) testing. First manned hypersonic aircraft; capable of suborbital spaceflight.