The SeaPhantom by Maritime Flight Dynamics is a marine craft which uses ground effect aerodynamics to transport passengers smoothly and effortlessly above the waves at speeds up to 100 mph.
The craft resembles a slightly futuristic small floating jet, which seats 5 and performs like an ordinary speedboat at speeds up to 35 mph.
Beyond 35 mph, however, the speed and the aerodynamical lift of the wing-shaped body forces air underneath it and it rises above the waves, continuing accelerating up to its top speed of 100 mph.