ISO 668

A new container that has made only one voyage, usually from the factory to the destination country. It is in near-new condition: clean paint with minimal dents and rust.

Sellers' terms for the condition of used containers — not an official standard, so always ask for photos or inspect the unit. Typically: A = minimal dents and rust, B = some dents or light rust but a sound structure, C = more damage, fine for basic storage.

A used container certified fit to carry sea cargo: its structure, floor and doors still meet safety requirements.

A used container that keeps out wind and water (no leaks). Fine for storage on land, but not necessarily fit for sea shipping.

A metal plate on the container door showing its safety approval under the Convention for Safe Containers, including the manufacturing date, maximum weight and stacking capacity.