en.Wedoany.com Reported - CWS – Computed Wing Sail (Montoir-de-Bretagne, France) has advanced the full-scale prototype of its Airfin350 rigid wing sail for ship propulsion systems from the assembly phase to active testing at the Port of Nantes-Saint-Nazaire, marking a key milestone in the technology's development.

The 40-meter prototype features an asymmetric aerodynamic profile based on aircraft wing geometry, equipped with a patented folding and reversing system designed for efficient direction changes and reduced air draft when needed. Its carbon fiber reinforced polymer (CFRP) structure was previously produced using a six-cavity resin infusion mold and large-scale 3D-printed assembly jigs by SMM Composites (Lanester, France), manufacturing 54 CFRP omega-section stiffeners.

The prototype completed its first round of on-site testing in the port area (selected for favorable wind exposure conditions), subjecting the structure to real wind conditions. CWS states that the system is designed to achieve fuel savings and CO2 reductions in compliance with IMO EEDI, EEXI, and CII regulations, as well as European ETS and FuelEU requirements. With testing completed, CWS's first commercial project is underway in collaboration with Windcoop (Lorient, France), planning to equip the vessel Miaraka with three automated Airfin350 rigid wings for routes between Marseille and Madagascar. For more information on the Airfin350 rigid wing sail, visit the CWS website.

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