Introduction to hovercrafts
This page contains pictures that I am not the creator or owner of - sources are available here. You can enlarge the images by right-clicking on them and select "open in a new tab" or "display image".
A hovercraft is an amphibious vehicle mounted on an air cushion (a skirt), which allows it to fly - it's not a metaphor, a hovercraft flies - above all types of surfaces : land, water, sand, snow, ice, etc. The hovercraft can go from one to another without difficulty and without losing speed.
To sum up how hybrid a hovercraft is :
like a boat, a hovercraft must float, face waves and water currents
like a plane, it must be aerodynamic, light and well balanced
like a racing car, it must have enough engine power to reach high speeds