Oceans, rivers, lakes and canals are some of the waterways on which ships, boats, ferries, hovercrafts, etc. move and transport goods and people.
The goods may be transported through sea and then land and again to another part of sea in places where the sea is not present on a continuous stretch. Hovercrafts have a giant high speed fan and a balloon like structure at the bottom in which air is filled to move them. Canals are constructed across rivers and dams which serve as means of transport.
Trade and commerce between countries is mainly done through waterways.
Even though waterways is a slow means of transport it is widely used because of its ability to carry a variety of goods of any size and form at a much lower cost than airways.