What is a Ground Effect Vehicle?

The RFB X-114 was intended to be able to traverse rougher waters and possibly the open ocean by flying higher than previous ground effect vehicles.

Worlds First 'Real' R/C Ground Effect Vehicle

The National Interest: Regions

Nature Inspires Wing-in-Ground-Effect Aircraft, 2021-11-12

How Ground Effect Vehicles Work

Why I think that a prototype V model would be more likely than V2 returning. : r/Ultrakill

Ground-effect vehicle - Wikipedia

aerodynamics - How do ground effect vehicles perform turns? - Aviation Stack Exchange

Failboats – Equals Zero

Ground Effect Vehicles v/s Conventional Aircrafts, by Neelay

Ground effect vehicle A-90 Orlyonok. Экраноплан Орлёнок