With over 50,000 merchant ships roaming the ocean, they can be classified into six different fleet types. General cargo ships, fishing vessels, cruise ships, tankers, container ships and bulk carriers. All these types of vessels are handled by container terminals such as the South Asia Gateway Terminals in their course of work. The 03 leading nations having the largest fleets are Japan, Greece, Germany with China and the United States of America coming in fourth and fifth places respectively.