Often called as support of mobilization of collective action, the territory is polysemous in its definition. The general council of “Côtes-d’Armor” as a local and public authority relies on the administrative territory within its prerogative to implement its approach called “Turquoise Economy”. This aims to reaffirm and to strengthen the maritime ambition of Côtes-d’Armor while promoting an economic diversification based on an integrated management of maritime and coastline space and resources. However, although the general council is perceived as legitimate to intervene as a public authority, the territory of intervention has often been questioned by the stakeholder, whether or not they participate to the implementation of the policy. Based on our work, we will analyze the reasons of this lag and we will demonstrate how it can be overcome through a public policy thought in an inter-territorial perspective.