Container (Shipping Container)

A shipping container is a reusable steel box built to international ISO standards for transporting goods across multiple transport modes. The two standard sizes are 20-foot (TEU — twenty-foot equivalent unit) and 40-foot (FEU — forty-foot equivalent unit). A standard 20-foot container has an internal capacity of approximately 33 cubic metres and a maximum payload of around 28 tonnes. Containers have standardised corner castings for crane handling and twist-lock securing.

Containerisation revolutionised global trade by standardising cargo handling. Before containers, loading a ship took days of manual labour; now it takes hours. Containers protect goods from weather, theft, and handling damage. They enable seamless intermodal transport — the same container can move from a ship to a truck to a rail car without anyone touching the cargo inside. At Qatar's Hamad Port, container operations are the primary activity, handling the majority of the country's non-bulk imports and exports.

Standard dry containers (general cargo), reefer containers (temperature-controlled), open-top containers (oversized cargo loaded from above), flat-rack containers (heavy or awkward loads), tank containers (liquids and gases), and high-cube containers (extra height for lightweight, voluminous goods). Choosing the correct container type is essential for protecting cargo and optimising shipping costs.