Stuttgart university participated in the Floatgen floating offshore wind demonstrator as a consortium partner, providing engineering consultancy focused on structural and system-level performance validation. The university delivered coupled-load simulations for the integrated floating system, supporting assessment of how the turbine, tower and floating foundation behaved together under combined wind, wave and platform-motion conditions. In addition to the modelling work, Stuttgart university evaluated the project’s measurement campaign results. This work supported interpretation of monitored loads and responses during the offshore test programme at the SEM-REV site off Le Croisic, helping the consortium compare predicted behaviour against real operating data and refine the engineering understanding of the demonstrator’s performance. This role formed part of the project’s R&D and validation effort funded through European and French support, aimed at demonstrating and benchmarking floating wind technology under real-world Atlantic metocean conditions and informing the engineering basis for future floating offshore wind deployments.