Our Journey
Begins Here

Passionate about developing and modifying maritime, offshore, and custom-made containers, we specialize in container sales, offshore rentals, consulting, and tailored project solutions.

Explore

No Idea To Small Or To Big

Kortainer lives for the container world. Turning a small idea into a real container solution is what we do. We answer everything from small questions to almost fully thought-out plans. Make it as crazy as you want!

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From the tiniest spark to a full-blown container solution, we aim to make the impossible possible!

Maximise Your Container Wish

Kortainer specializes in finding the best solutions for every container concept. With nearly two decades of maritime container experience, we confidently ensure that we will meet your needs.

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Our network of all possible container services caters to every need, whether it's a special model or large quantities.

The Journey

We value clear communication to ensure a shared understanding of the vision. At Kortainer, we work closely with our clients to achieve the best possible results.

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Clear Communication. Shared Vision. Unmatched Container Solutions.

Services

Kortainer Philosophy

The Drive, Spirit and Values

At Kortainer, success isn't just measured by the number of containers moved or modified—it's about how we do business and why we do what we do.

‍The Drive
I'm Willem Jan Kort. My container journey began with 16 years at CARU Containers, where I gained deep experience in world wide container sales, modification, and development. In 2022, I started Kortainer with one clear mission: to bring a more personal, agile, and quality-focused approach to container solutions.
That same drive still fuels everything we do today—whether it’s a standard container sale or a complex custom offshore container project.
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‍The Spirit
‍Kortainer is built on a spirit of creativity, resilience, and partnership. We’re always looking for better, smarter ways to solve problems—and we never back down from a challenge.
We’re hands-on, flexible, and not afraid to think outside the box (or inside it, if we're modifying it!).

‍The Values
‍We believe in doing business the right way—with honesty, transparency, and a long-term mindset. We build strong relationships with clients, suppliers, and partners alike. Sustainability plays a key role in our philosophy: by reusing and modifying containers, we give old materials new purpose, reducing waste and extending their lifecycle in meaningful ways.

At the end of the day, Kortainer is more than a service provider—we’re your trusted partner in container solutions. Whether you’re renting an offshore unit, developing a custom build, or seeking advice, you can count on us to bring expertise, integrity, and care to every step of the process.

Outside of Kortainer, I’m a proud husband and father of two sons. Just like at home, I believe in building strong foundations, staying grounded, and always being up for a good challenge.

‍Let’s Talk Containers.

Container Modification

Innovative Upgrades

At Kortainer, we make use of carefully selected container modification service companies to meet your unique needs.

While we don’t modify containers ourselves, our extensive and constantly growing network of trusted partners allows us to select the correct experts who can transform standard and offshore containers into modified solutions.

Whether you require additional features, structural changes, or bespoke interiors, we leverage our knowledge and connections to ensure you receive the best service tailored to your specifications.

From enhancing functionality to creating distinctive spaces, Kortainer ensures your new container exceed expectations.

Custom-Made Containers & Structures

Building Your Vision

When container modifications no longer meet your specific needs, Kortainer offers custom-built containers designed and manufactured to your exact specifications.

By leveraging our network of trusted experts, we provide flexible, innovative, and personalized solutions that turn your vision into reality.

Whether for unique structural requirements or specialized applications, Kortainer ensures your custom container solution fits perfectly.

DNV Offshore Container Rental

Built for Every Condition

Ready to enhance your offshore operations? Kortainer is proud to announce the recent launch of our DNV-certified offshore container rental service from Rotterdam. In collaboration with our trusted international partner, Tiger Offshore Rental, we combine decades of expertise to provide reliable, safe, and compliant container solutions.

Whether you are working in offshore oil & gas, maritime, or other demanding industries, our containers meet the highest standards of safety, durability, and reliability. Designed for offshore transportation, storage, and special projects, our containers offer professional, worry-free solutions.

With flexible rental options and an international team you can trust, Kortainer ensures your container needs are met with confidence and the highest performance standards.

Container Sale/Purchase

You Name It, We Find It!

Kortainer specializes in sourcing containers for sale and purchase, tailored to meet your specific needs. Through our extensive network, we connect clients with the right new or used containers at competitive prices.

Whether you're looking to buy or sell, we ensure a seamless process, handling everything from sourcing to logistics. With a focus on quality, durability, and reliability, Kortainer is your trusted partner for all container transactions.