Importance of Waterways: a) Waterways are the cheapest means of transport and are most suitable to carry heavy and bulky goods. b) It is a fuel-efficient and environment-friendly mode of transport. c) India has inland navigation waterways of 14,500 km in length. d) There are some major seaports which help in the transportation of goods from and to various countries. e) Also, there are riverine ports for passengers to travel and to transport goods within India.