Ekranoplans are a curious class of vehicle; most well known for several Soviet craft designed to operate at sea, flying just above the waves in ground effect. [rctestflight] had accidentally come ...

The seaglider takes advantage of what's called the wing-in-ground-effect – where a winged vehicle experiences less aerodynamic drag when it's close to the surface it's flying above, like the ...

Beyond that, its wings give it enough lift to leave the water but stay in ground-effect flight, flying low to the water to reduce drag and improve lift when compared to an aircraft flying out of ...