Container ships can becategorized based on sizes and structure.
Based on the structure, there are twotypes of container ships. Those are,1. Gearedcontainer ships. Advantages§ Some geared ships have gantry cranes are installed. These cranes, specialized forcontainer handling, can roll forward and aft on rails. § This type of ships can operate cargo in portsthat are not equipped with container handling facilities such as cranes.Disadvantages§ Additional capital expense and maintenance costs and ships will cost more to purchase than a gearless ship.
§ These cranes generally slower in loading and unloadingcontainers more than gantry cranes in seaports.§ Lesscapacity more than gearless container ships. 2. Gearlesscontainer ships. (Source: Clarkson research, March2014)According to this graph operating gearless large ship ismore profitable than operating geared small ship in present conditions.
Modernmarket small geared vessels more frequently use as feeder vessels. Other thanthat, most of the large vessels are gearless due to various aspects. Followingadvantages and challengers can be discussed regarding the gearless ships.Advantages§ Large export volumes from stateswill increase demand for creating more plants in several countries. This willalso drive demand of sourcing out raw materials.§ Larger container ships willbeneficial for helping to contribute to the progress of developing countries.§ When consider socio economicaspects, with the larger capacity, more containers will be carried with lessnumber of vessels, leading to a decreased environmental impact.
Challenges § Due to the Larger sizes, operational processes will be morecomplexes such as placement, distribution, and handling of the containers.§ Operational risk for operators and owners will be increased.§ Ports have limited space.
Therefore, fleet of huge ships canbe caused to occur longed waiting times within cargo loading and unloading