1) What is a hovercraft?
Hovercraft can travel over water as well as on land. it is developed by British Engineer Christopher Cockerell.
2) What is Hydrofoil?
A Hydrofoil is a boat which can fly over water.
3) What is a Dhow?
Dhows are arab sailing vessels.
4) What is a sea plane?
Sea plane is an air craft designed to land and take off on water.
5) What are submarines?
Its a specialized watercraft that can operate underwater.