Sunreef Yachts has unveiled an automated wing sail for its sailing catamarans. The freestanding wing can rotate through 360 degrees and adjust its shape to suit changing wind conditions while under way. The yard plans to introduce the system across its entire sailing range.
The wing sail is hoisted and lowered automatically. According to Sunreef, it can also be hoisted at anchor with the wind from astern. The system is designed to use fewer moving parts and fittings than a conventional rig. Sunreef expects this to reduce crew workload and maintenance requirements.
Under optimal apparent wind conditions, the wing sail generates 50% more lift and 40% more propulsive force than a conventional sail of the same area, according to Sunreef. The yard also expects improved upwind performance. An AI-assisted control system continuously analyses sailing conditions and coordinates the wing, rudders and propulsion system. It can also respond to voice commands.
Wing sail could also generate electricity
Under motor power, the system can use the apparent wind to generate electricity, Sunreef says. An AI-assisted energy management system coordinates the engines, wing sail, hydrogeneration and solar power. On its next generation of sailing catamarans, Sunreef plans to combine the wing sail with hydrogeneration and its Solar Skin technology, which integrates solar panels into the yacht’s composite structure.
The yard will announce which models will be fitted with the wing sail first at a later date.
