There are some forms of anger that change the world.
Bernard Doriez's idea was born out of a stark realisation: every time a boat was refitted and antifouling paint was applied to its hull, it silently poisoned the seabed he loved so much. A sailor at heart and a textile architect by trade, Bernard refused to accept this inevitability. He was fed up. Fed up with polluting out of habit. Fed up with doing ‘what everyone else does’.
So he thought about it. And he invented something.
A simple but revolutionary idea
In 2004, Bernard developed the concept for a custom-made fabric cover designed to protect hulls without the use of toxic biocides. This is a sophisticated, efficient and, most importantly, uncluttered solution.
He filed a patent, developed software, and selected specific materials. For years, he tested, adjusted, and perfected his product. Then, in 2020, his daughter Lucie joined him, and together they founded K-Ren, a family business driven by a clear vision: to protect boats and the sea in a different way.
Family adventure and shared combat
Lucie, with ten years of experience in the biomedical field, joined her father, convinced by the project. Together, they transformed a handmade invention into an industrial solution.
Their cover, which is 100% recyclable, can be installed in a few minutes and adapts to all boat shapes. It prevents fouling – the accumulation of algae and shells on the hull – without the use of chemicals.
No more scraping, abrasive paints or invisible pollution. With K-Ren, boaters are choosing a healthier sea, without antifouling. A cover lasts an average of ten years and represents both an ethical and economic investment.
Its effectiveness has been proven, as K-Ren currently equips more than 300 boats in France.
A sustainable alternative to traditional refitting
K-Ren is not just a company.
It is a cry from the heart that has become a concrete solution. An innovation born out of deep frustration, driven by a committed family, and adopted by those who refuse to turn their backs on the ocean for the sake of convenience.
K-Ren is a promise: to sail without harming the environment.
We didn't invent the ocean, but we chose how to protect it.
Il y a des colères qui changent le monde.
Celle de Bernard Doriez est née d’un constat brutal : chaque carénage, chaque antifouling appliqué sur les coques de bateaux, empoisonnait silencieusement les fonds marins qu’il chérissait. Marin de cœur, architecte textile de métier, Bernard n’a pas accepté cette fatalité. Il en avait marre. Marre de polluer par habitude. Marre de faire "comme tout le monde".
Alors il a réfléchi. Et il a inventé.
Une idée simple, mais révolutionnaireire
En 2004, Bernard imagine une housse textile sur mesure, capable de protéger les coques sans recourir aux biocides toxiques. Une solution élégante, efficace, et surtout propre.
Il dépose un brevet, développe un logiciel, sélectionne des matériaux spécifiques. Pendant des années, il teste, ajuste, perfectionne. Puis en 2020, intervient Lucie, sa fille, avec qui il fonde K-Ren, une entreprise familiale portée par une vision claire : protéger les bateaux et la mer autrement.
Une alternative durable au carénage traditionnel
Fini les grattages, les peintures abrasives, les pollutions invisibles. Avec K-Ren, les plaisanciers optent pour une mer plus saine, sans antifouling. Une housse dure en moyenne dix ans et représente un investissement à la fois éthique et économique.
Son efficacité est prouvée, puisqu’à ce jour, K-Ren équipe plus de 300 bateaux en France.
K-Ren, ce n’est pas juste une entreprise.
C’est un cri du cœur devenu solution concrète. Une innovation née d’un ras-le-bol profond, portée par une famille engagée, et adoptée par celles et ceux qui refusent de tourner le dos à l’océan au nom de la facilité.
K-Ren est une promesse :
celle de naviguer sans nuire.