Shipping Containers

A shipping container is a container with strength suitable to withstand shipment, storage, and handling. Shipping containers range from large reusable steel boxes used for intermodal shipments to the ubiquitous corrugated boxes. In the context of international shipping trade, "container" or "shipping container" is virtually synonymous with "(standard) intermodal freight container" (a container designed to be moved from one mode of transport to another without unloading and reloading).
From http://en.wikipedia.org/wiki/Shipping_container

Container ships are cargo ships that carry all of their load in truck-size intermodal containers, in a technique called containerization. They are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo.
Container ship capacity is measured in twenty-foot equivalent units (TEU). Typical loads are a mix of 20-foot and 40-foot (2-TEU) ISO-standard containers, with the latter predominant.
From http://en.wikipedia.org/wiki/Container_ship

But the record-breaking aspect of the Globe, owned by Shanghai-based China Shipping Container Lines and built in South Korea, is its capacity. It can carry 19,100 standard 20ft containers. That's estimated to be enough space for 156 million pairs of shoes, 300 million tablet computers or 900 million standard tins of baked beans.
From http://www.bbc.co.uk/news/magazine-30696685