Structural standards are used in the container shipping industry and relate to the physical condition of the container:
This is the international leasing inspection/repair standard, generally regarded as the most stringent.
CW (Cargo Worthy)
This is the standard used by most shipping lines.
WWT (Wind and Watertight)
This is a common standard used by container traders to classify containers that do not have a valid CSC Plate for shipping. Although watertight, these containers are not suitable for shipping for any number of inspection criteria.
AI (As is)
This grade classifies containers that have no guarantee that they are, or will remain, watertight or cargo worthy for any extended period of time. Often they have sustained damage that is not easily repaired such as large dents, holes or extensive, deep-seated corrosion.
Aesthetic grades are used to describe the cleanliness and visual appearance of the container.
Used to denote the highest standard of internal cleanliness.
Generally a very clean container that won’t transfer marks to cargo.
Scuffed and marked with some rust showing.
Quite badly marked with widespread rust showing.
Download Container Grading Info