Stirling Design International, design and naval architecture office based in Nantes, France, has specialized in project design and project management for inland and seagoing vessels. SDI offers a wide variety of services in the field of naval design: research and development, concept design, naval architecture, interior architecture, exterior and interior design and construction follow up. SDI is a partner of following wind ship projects : SILENSEAS Project (Chantiers de l'Atlantique), Orient Express (Accor), Swap to Zero (Ponant), Europeen project WHISPER (in partnership with Oceanwings).