The ecological transition requires a reduction in our greenhouse gas emissions. The development of decarbonated energy, including marine renewable energy, is one of the solutions recommended to reduce these emissions. However, the presence of these offshore wind farms in coastal areas and their management methods have direct or indirect effects on fishing, particularly through the additional occupation of space in an environment that is already actively sought after, and through the effects and impacts that their installation and operation induce in the areas where these farms are installed. Both Japan and Europe will develop or are developing these energy production methods. Hence the importance of reflecting on the management of conflicts of use and on possible compensation in a win-win negotiation in order to preserve the traditional activities affected.

Key words: MRE; coastal fishing; conflicts of use; impacts of MRE on traditional activities, France and Japan.