Container ships are ocean vessels that carry goods in large containers, a technique called containerisation. Container ships are primarily used for the transportation of non-bulk cargo, generally manufactured goods, in truck-size intermodal containers.
They can be divided into several categories according to their cargo carrying capacity. Main categories of container ships include Feeder, Feedermax, Panamax, New Panamax, and Ultra Large. At present, approximately 90% of non-bulk cargo around the world is transported by container ships.