They are what we represent when it comes to sea freight. From the name it is obvious that this type of vessel is designed to carry containers. There is a separate classification of containers, according to strict international rules, which correlates with the type of cargo being transported.
The cargo capacity of container ships is indicated in TEU – the maximum number of standard 20-foot containers transported. Container ships are also classified by size, like bulk carriers, but they have special dimensions:
Explorer Class which carries from 16600 to 18200 TEU.
Triple E-Class (“Economy of scale, Energy efficient and Environmentally improved”) that carries between 18,200 and 21,000 TEU.
Container ships basically operate on a principle similar to passenger ships – on the so-called “lines”. That is, there are certain ports on the route and the ship runs according to the schedule according to the appointed order among these ports.