Blue21
Blue21 – Floating projects with a positive social and ecological impact.
We must shift from sustaining our planet to restoring it. Blue21 is dedicated to solving the grand challenges of the 21st century: rising sea levels, climate change and urbanization.
Building on water opens up exciting new possibilities, from adapting to rising sea levels and flood resilience to expanding livable space with floating structures. With years of experience, the Blue21 group is there to guide your floating urban- or maritime project from concept to realization.
Meet the Blue21 group

Blue21 Consulting
The global knowledge leader for the design, technology, and realization of climate-resilient floating projects in delta cities worldwide. By using in-house tools for research and implementation of floating projects, we ensure optimal results for our clients.

Bluelands
Bluelands offers a smarter, more sustainable solution for floating structures, combining cost-efficiency, adaptability, and eco-friendly innovation in a scalable floater. Designed for versatility, it’s ideal for a range of building projects in inland, shallow waters.

Square Floating City
Square Floating City develops fully functional, modular floating city blocks that can scale up to a 1 km² floating city, housing 35,000 people. These are designed to be built faster and more affordably than traditional land reclamation.
We are excited to be part of the Buccaneer community. It is a unique network in the energy & maritime sector. For Blue21 the network and knowledge that Buccaneer brings is very valuable.
Rutger de Graaf-van Dinther, Co-Founder Blue21
Get in contact with Blue21
Telephone: +31 (0) 15 256 1872E-mail: float@blue21.nl
Visit the website of this Buccaneer
Become a Buccaneer
Did we manage to inspire you and are you interested in becoming a Buccaneer or our accelerator program? Please reach out to Kirsten Ruiter, Managing Director, for any question you have.