Q: Does it float when you turn the engine off? 

A: Honestly people ask this often, though it hurts my feelings. Yes, it does, better than most boats, as it’s light and flat bottomed. They are much more stable than typical boats both on and off cushion.

Amphibious Marine Explorer 20 hovercraft at Taku Glacier near Juneau Alaska.

Question: How does hovercraft work?

Answer: Have a look at this page.

Hovercraft Sevtec Vanguard 14x7 1993 jumping over sand bar on the Columbia River near Portland Oregon.