Explanation of the principle of a hovercraft, from
I'm Sorry I'll Read That Again:
If you throw a stone into a bucket of water the ripples travel outwards. It's the same with the hovercraft. If you throw a hovercraft into a bucket of water the ripples travel outwards.
Since its invention the hovercraft has progressed by leaps and bounds. Which is why it's so uncomfortable to travel in.
Seriously folks, the last
cross-channel hovercraft has just been
retired from service, and they are no longer used in the country of their invention. The
superannuated vehicles may be palmed off on
Cuba, which still uses them.