Shipping Container Grades Explained: WWT, CW & One Trip

Not sure what terms like WWT, CW, or One Trip actually mean?

You’re not alone, these are the most common shipping container grades, and choosing the wrong one can lead to overpaying or getting a unit that doesn’t fit your needs.

On this page, we break down each condition clearly so you know exactly what you’re getting, and which option is right for you.

All our containers come with a 25-year no-holes, no-leaks warranty, so you can choose with confidence.

What is a WWT Container (Wind & Watertight)

A WWT (Wind & Watertight) container is a used shipping container that is fully sealed against external elements, ensuring your items stay dry and protected in all weather conditions. While these containers may show visible signs of wear such as dents, surface rust, or previous repairs, their primary function remains intact — reliable storage.

Each unit is inspected to ensure there are no leaks or structural failures, making WWT containers a practical and budget-friendly solution for a wide range of storage needs. They are commonly used on farms and residential properties where functionality matters more than appearance.

WWT containers are ideal if you need a secure, weatherproof space without paying.

All our WWT containers come with a 25-year no-holes, no-leaks warranty, giving you long-term reliability and peace of mind.

Best for: budget-friendly storage, construction sites, general use

What is a CW Container (Cargo Worthy)

A CW (Cargo Worthy) container is a used shipping container that has been inspected and certified for transport, meaning it meets structural standards required for shipping cargo. This makes it a step above WWT in terms of condition and reliability.

Compared to standard storage-grade units, CW containers typically have fewer dents, less corrosion, and better structural integrity, making them suitable for both storage and transportation. They are often chosen by businesses that need containers for logistics and export.

All CW containers we offer are backed by a 25-year no-holes, no-leaks warranty, ensuring consistent performance and protection.

Best for: transport, higher-value storage

What is a One Trip Container

A One Trip container is considered the highest grade available, as it has only been used once to transport cargo from the manufacturer to its destination. This means the container is in near-new condition, with minimal wear and a clean, professional appearance.

These containers are built from high-quality steel and designed for long-term durability. Because they have not been exposed to years of use, they have no significant dents, rust, or repairs, making them ideal for applications where appearance and longevity matter.

One Trip containers are commonly used for business storage, retail setups, offices, or any situation where a clean and presentable look is important. They also offer the widest range of configurations, including specialty options like tunnel containers (doors on both ends) and open side containers (full side access).

All One Trip containers come with a 25-year no-holes, no-leaks warranty, making them a premium, worry-free investment.

Best for: premium storage, business use, long-term investment

Not sure about the shipping container length and height you need for your cargo or storage requirements?

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