Although the can carry considerable disposable stores, its primary built-in weapon is the 30 mm Avenger Gatling gun. One of the most powerful aircraft cannon ever flown, it fires large depleted uranium armor-piercing shells. In the original.
Ekranoplan Casspian The Russian Tank-Ship-Plane. Not exactly a plane but still cool. It flies just over the water because of ground effect. So it can haul a heavy load very efficiently compared to getting it up to altitude. Or floating.