The KM Ekranoplan (dubbed the Caspian Sea Monster) is quite an interesting vehicle. It is a mixture of airplane and hovercraft. Simply speaking, an ekranoplan is an airplane specially designed to fly at low altitudes above the water's surface. It takes advantage of the aerodynamic principle know as the “ground effect”. Basically the air between the wings and water's surface is very compressed and thus allows the plane to fly using less fuel and still very quickly. Also it allows to transport heavier load than conventional planes. Try not to yank back on the stick too much or the tail section might shear off. I created this on my iPhone, so if performance is lacking, I apologize.

(Just noticed that I can't download it to the same phone I built it on...odd)