:ADDRN, the planning agency for the Saint-Nazaire region (France), works to analyse and develop waterfront areas of the Nantes / Saint-Nazaire urban agglomeration. As part of its annual partner programme, it helps its members (local authorities, port authorities, chamber of commerce, the State, etc.) to formalise and implement their projects. Like the agencies of the French National Federation of Planning Agencies network, ADDRN anticipates urban trends and developments, plays an active part in strategic thinking, produces planning documents and contributes to the process of designing territorial development projects. ADDRN is also a key player in efforts to define and implement port development and planning projects in Saint-Nazaire.