In simple words, a container is a large metal or wooden box used for transport to make easier the process of loading goods onto ships.
There are different types of containers such as Open top, general-purpose, double door, open side, and so on. At the same time, you can found different sizes of them 20 FT general, 20 FT HC, 40 FT general, 40FT HC, among others.
The container is an essential part of an ocean shipment; in fact, we could say that there is no shipment without a container, at least not in a safe way.