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WE ARE BLUE21- Floating projects with a positive social and ecological impact. 

We are a global knowledge leader in researching, designing and realizing floating projects in delta cities world-wide. Our belief is that we must shift from sustaining our planet to restoring it. Floating development can make cities more resilient, creates space for new eco-systems and enables bio-based economies to flourish. 

With our extensive experience and expert network of partners, we have the knowledge and expertise to guide you through the entire process of your floating project from conception to realization. On our website you will find a comprehensive overview of our services and technologies.


Rutger de Graaf-van Dinther
+31 (0)15 256 1872


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