The H2Mare project, led by the Federal Ministry of Research, Technology, and Space, unveiled a groundbreaking floating test platform in Bremerhaven to showcase a complete power-to-X process chain for synthetic fuels. The initiative aims to test the planning, construction, and operational aspects of the platform to inform the development of larger production facilities in the future. With a focus on sustainability, the platform utilizes wind energy, seawater, and ambient air to produce synthetic fuels through innovative processes like direct air capture and high-temperature electrolysis. This modular system allows for off-grid operation, adapting to the fluctuating availability of renewable energy sources. Test operations, commencing in July 2025, will begin in the port of Bremerhaven before transitioning to offshore locations for comprehensive research on operational flexibility and regulatory conditions. The project also includes exploration of alternative Power-to-X synthesis methods, such as the production of liquid methane, methanol, and ammonia. Through the PtX-Wind project, researchers at KIT and collaborating institutions aim to advance the production of green hydrogen derivatives and e-fuels at sea, contributing to the national hydrogen strategy and sustainable energy transition.