Hovercraft is multi-purpose vehicle; which can travel across various types of terrain with no alteration. It is a vehicle capable of traveling over most surfaces on a cushion of air trapped under the body for lift. Air propellers, water propellers, or water jets usually provide forward propulsion. Air cushion vehicles can attain higher speeds than can either ships or most land vehicles due to lower frictional forces and use much less power than helicopters of the same weight.
Video – Technology and Development
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