Write merits and demerits of waterway …

Water transport can be undertaken either along inland rivers and canals or across oceans.

1. It involves low running cost which makes it the cheapest form of transport system over long distances.
2. Large vessels especially run economically since fuel costs can be spread over greater quantities. Distance does not add greatly to total transport cost.
3. It has the capacity of conveying heavy and bulky cargoes
4. This mode of transportation is very slow compared to <a href="http://www.jotscroll.com/forums/3/posts/194/road-transport-types-advantages-and-disadvantages-of-road-transport.html">road transport</a>hence; it is unsuitable for perishable goods and urgent cargoes.
5. There may be delays at locks and docks, while navigation may be impeded majorly due to poor weather conditions.
6. It is unsuitable for short distance journeys since transhipment is both costly and time consuming

   Following are the advantages of air transport

   High Speed

   It is the fastest mode of transport and therefore suitable for carriage of goods over a long distance. It require less time.

   Quick Service

   Air transport provides comfortable, efficient and quick transport services. It is regarded as best mode of transport for transporting perishable goods.

   Inspite of many advantages, air transport has some disadvantage also.

   Risky

   Air transport is the most risky form of transport because a minor accident may put a substantial loss to the goods, passengers and the crew. The chances of accidents are greater in comparison to other modes of transport.

   Very Costly

   Air transport is considered costlier as compare to other mode of transport. The operating cost of aero-planes are higher and it involves a great deal of expenditure on the construction of aerodromes and aircraft.