MONACO– Hull Vane BV, the Dutch company that makes under-the-transom wings for displacement motor yachts and commercial vessels, is ending 2019 on a high note.
At the Monaco Yacht Show – 2 weeks after launching a “semi-custom” Hull Vane for recreational yachts of 10 to 20m – it unveiled a computer-steered “dynamic Hull Vane” for superyachts.
The latter is a collaborative undertaking with Naiad Dynamics of Great Neck, NY. It is an actively controlled version of the patented, static Hull Vane that improves the performance and comfort of medium-speed displacement ships. Hull Vane and Niad Dynamics speak of “the next level in ride comfort and efficiency” in the world of superyachts.
Bruno Bouckaert, Hull Vane BV Sales Director says, “since its introduction in 2014, the Hull Vane – essentially an “underwater spoiler” – has been increasingly applied to reduce the resistance and motion of ships.”
Ideal candidates, he adds, are ships that combine a significant displacement with a relatively high speed – vessels like superyachts, passenger ships, naval ships, coastguard vessels and fast offshore supply vessels.
Hull Vane has already installed 21 static Hull Vanes. The company says it has 20 on order, both for new-build ships and retrofitting.
“In addition to reduced resistance, the static Hull Vane provides a reasonable element of pitch damping,” says Bouckaert. That enhances onboard comfort by reducing the pitch motion, a main source of seasickness, and on a superyacht hinders helicopter and tender launch operations.
Searching for more pitch reductions than a static device can generate, Hull Vane linked up with Naiad Dynamics and engineered an actively controlled version of the Hull Vane. Computer simulations point to a pitch motion reduction of 10-20% with a passive Hull Vane® and 20-40% with an active Hull Vane.
The dynamic hull vane combines Hull Vane BV’s hydrodynamic expertise with the hydraulic, mechanical and control system expertise of Naiad Dynamics which has already manufactured over 14,000 ship motion control systems supplied.
The 2 companies say the dynamic Hull Vane boasts the benefits of the passive version delivering more speed and range, less wave-making and a quieter vessel. In rough seas, operators can turn it on, and the ship feels as if it has active suspension: less pitching motion, less vertical acceleration, and less slamming. The result is actively controlled efficiency and comfort.
Bouckaert noted that application discussions are already underway with some of the world’s most renowned superyacht builders.