The Dutch Naval Architecture firm Van Oossanen has created radical new superyacht hull designs which mean fantastic gains in speed, performance and length for very fastest of large motor yachts.

Release: The Dutch Naval Architecture firm Van Oossanen develops yachts that excel in performance, in terms  of comfort, efficiency and safety, in a close collaboration with the world’s best designers. The company’s patented Fast Displacement Hull Form (FDHF) has been the foundation of many  successful yacht designs, varying from Heesen’s 65m/215ft Galactica Star and 70m/231ft Galactica  Super Nova to the recent 45 to 75ft Beach series by Jetten Shipyard.

Recently, Van Oossanen has developed new hull concepts within the existing Fast Displacement  concept that respond to the demands of today, as well as future clients, for optimum comfort,  greater interior and exterior space, maximum length, and prestigious designs. Specifically, Van Oossanen’s ongoing research into the FDHF has been to examine alternative volume-length ratios to find unique owner benefits.

During 2016 Monaco Yacht Show, managing directors Perry van Oossanen and Niels Moerke will be present to introduce these new unique hull concepts to the global yachting industry. The result is the Fast displacement XL, the Gran Displacement and the Be-3 hull designs.

With these three new hull concepts, Van Oossanen proves its more than 25 years of expertise in  naval architecture and hydrodynamics, being CFD specialists as well. The Fast Displacement XL, Gran  Displacement and Be-3 enable yacht owners, shipyards and designers to completely explore new concepts and radical features for the best performing yacht designs that will meet the evolving  expectations of the market.

Fast Displacement XL: maximum length, best performance, patent pending.
The patent-pending Fast Displacement XL aims to maximise the length of the FDHF concept without increasing the Gross Tonnage. The Fast Displacement XL designs result in yachts with high slenderness ratios, which gives the best efficiency and ultimate comfort. It has also been found that these designs have both more interior space, as well as more exterior space compared to traditional yachts. With an increase in length of 20%, the interior space can be increased by 10%, while the  exterior deck area can be increased by as much as 30 to 40%, creating unprecedented exterior  lounge, pool and sun bathing areas.

The main advantage of the Fast Displacement XL is the possibility to create the longest yachts ever at the traditional gross tonnage boundaries of 200, 300 and especially 500GT. It is now possible to design a 60+ meter (200ft), three-deck yacht, with a maximum speed of 30 knots  staying below a 7ft draft, while staying below 500GT. This avoids the additional crew, complexity and  especially costs that come with yachts of over 500GT.

Also developed are designs of 199GT at about 35m in length and 299GT of over 45 meters in length.
All these designs share an increased interior space, a far greater exterior area, high speed potential  and shallow draft. Discussions with various shipyards, as well as private clients, are far advanced. Gran Displacement: 30 to 40% more interior space, good performance and comfort, patented FDHF. The idea behind the Gran Displacement concept was to create maximum interior volume within a  given length, without sacrificing comfort, high speed potential or the other performance  characteristics of the FDHF.

The Gran Displacement is optionally equipped with the newly developed ‘Assisted Hull Vane’, a pair  of hydrofoils positioned fore and aft under the hull that will create hydrodynamic lift and thereby  reduce the required ship’s power and increase comfort by dampening up to 40% of the hull’s vertical  accelerations.

The Gran Displacement allows 30 to 40% more interior volume within the same length than a  traditional yacht. Be-3: Super fast and efficient, optimal comfort, maximum exterior space This tri-hulled yacht design features a FDHF hull with two additional outriggers. Opposite to other  recent multihull motoryachts, Van Oossanen used the extra beam provided by the outriggers to place  her patented lifting foil, the Hull Vane, allowing the main deck to be extended over the full beam.

Results are an extremely good performance in terms of speed potential, range, comfort in waves and  also significantly more exterior space.

About the Fast Displacement Hull Form
The development of the FDHF was triggered by the desire to develop a hull form that is efficient over  the entire speed range and not only in a restricted speed interval around the maximum speed. Next  to resistance values that are 15 to 20% less than hard-chine hulls, the FDHF also offers significantly  increased comfort on board by its improved seakeeping behaviour and manoeuverability, and  dissolves the traditional ‘resistance hump’.