Fast Displacement Hull Form
We have developed a new hull form, the patented ‘Fast Displacement Hull Form’ or FDHF. The development of this concept 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.
The FDHF is applicable to all yachts and performs better than conventional displacement and semi-displacement type hull forms at all speeds up to full ‘planing’ speeds. At semi-displacement speeds, the resistance values displayed by the FDHF are 15 to 20 per cent better than those of well-designed hard chine hull forms.
Other benefits include significantly increased comfort onboard with better sea keeping and wave reduction. Particularly when compared to hard chine yachts, the FDHF showed improved sea keeping behaviour and manoeuverability, as well as a reduced sensitivity to a sudden increase in displacement.
In November 2009, we signed a contract for the first yacht featuring the fully developed application of the FDHF concept. Since then we have received many more commissions to develop new yacht concepts based on the FDHF, ranging from smaller yachts of around 20 meters up to 80 meters in length.
- Don’t Get the Hump, Perry van Oossanen, The Yacht Report, Issue 114, June 2010
- Hybrid Hull Will Meet All Luxury Yacht Speed Needs, Perry van Oossanen, The Naval Architect, October 2009
- Motor Yacht Hull Form Design for the Displacement to Semi-Displacement Speed Range – The Fast Displacement Hull Form, Perry van Oossanen, Justus Heimann, Juryk Henrichs, Karsten Hochkirch, The 10th International Conference on Fast Sea Transportation, FAST 2009, Athens, Greece, October 5 – 8, 2009