In this EU-funded project, eleven partners will develop and demonstrate a solution for wind as the main propulsion.Orcelle Horizon builds on several large previous projects where simulation tools, wing systems and initial designs of a prototype vessel have been developed. In this project we combine improvements to the simulation framework and wind propulsion systems by supporting the development of two physical demonstrators: an Oceanbird Wing on an existing vessel (retrofit) and a multi-wing newbuilt. The demonstrators are RoRo (PCTC) vessels that will operate in a trans-Atlantic route transporting cars and other cargo. Onboard there will be an extensive set of sensor systems that will allow them to function as research vessels to validate and improve designs, simulation tools and prototype designs of ship & wing systems. A tailored, dynamic weather routing software and service will be developed to optimize sailing performance.The project is a strong opportunity to combine the investments needed to get full-scale demonstration and data capture with advanced models and tools for windpropulsion vessels. The project coordinator is Wallenius Wilhelmsen, a world-leading RoRo logistics operator with some 130 RoRo vessels in global service. Beyond the demonstrator, the project partners use the models and tools to develop advanced conceptual designs and operational plans for multiple vessel types, enabling a large-scale shift towards wind as main propulsion.Project partners:Wallenius Wilhelmsen | SSPA Sweden | KTH Royal Institute of Technology | Ghent University | Alfawall Oceanbird | StormGeo | Volvo Cars | Maritime CleanTech | The National Technical University of Athens (NTUA) | Wallenius Marine | DNV GLThis project has received funding from European Union's Horizon Europe Framework programme under grant no 101096673.