The Karlsruhe Institute of Technology (KIT) and its partners are working on a groundbreaking project called 'PtX-Wind' under the H2Mare lead project to produce synthetic fuels on a floating platform using wind energy, seawater, and ambient air. The modular plant, set up on a barge in Bremerhaven, will soon start producing synthetic fuel directly on the sea near Helgoland Island. The platform features a direct air capture plant for CO2 recovery, a seawater desalination facility, and a high-temperature electrolysis unit to generate hydrogenous synthesis gas that will be used in fuel production. The system's modular structure allows for off-grid operation, dynamically adjusting to the availability of offshore wind energy. Test operations will begin in July 2025, assessing the flexible operation, maritime impacts, material properties, and regulatory conditions. The project also aims to explore alternative Power-to-X synthesis methods like producing liquid methane, methanol, and ammonia. H2Mare, focusing on green hydrogen and Power-to-X products from wind energy, contributes to Germany's hydrogen strategy, with the PtX-Wind project led by KIT in collaboration with the German Aerospace Center and TU Berlin.