WAGENINGEN – Hull Vane BV has developed a semi-custom, below-the-transom Hull Vane wing for recreational yachts of 10 to 20m (33 to 66ft.)
Until now, the Hull Vane went only on commercial vessels and large yachts. But the company says it has developed a semi-custom version that works equally well on smaller yachts, improving their speed efficiency, extending their range, delivering a quieter ride and less fuel use.
The semi-custom version was launched at the 2019 HISWA-in-Water Boat Show in early September in the Netherlands by Hull Vane BV, a spin-off unit of Van Oossanen Naval Architects.
The Hull Vane’s origin dates back to 1980s America’s Cup sailing when Dutch naval architect Piet van Oossanen launched his patented winged-keel design. It sits below the transom and generates forward thrust by raising the stern and keeping the bow down at high speed.
The Hull Vane cuts the resistance of water displacement vessels. Using computational fluid dynamics software, Hull Vane Sales Director Bruno Bouckaert says “this was further refined and optimized for individual vessels. In 2014, 2 ships came into service with a Hull Vane – a 55m (180ft.) offshore vessel and a 42m (138ft.) Dutch-built super yacht. By now, dozens of Hull Vanes have been built.”
The Hull Vane’s performance on large vessels depends on their length, speed and hull shape in the aft sections. It can range from 5 to 15% for suitable ships. In specific cases, savings up to 20% are possible.
Responding to market demand, his company developed a more affordable Hull Vane for 10-20m motor yachts. It does away with CFD optimization for individual yachts of 10-20 meters, but uses standardized aluminum profiles that can be quickly retro-fitted on existing yachts.
The Hull Vane recovers energy from the stern wave and converts it into forward thrust. The wing profile generates an upward and forward lift force that gives the boat a little push in the back.