Parent Projects

Decided by experience
The best of wave piercing planing catamaran and displacement hull

New ideas are important.
But final performance only is proved after testing and optimizing in practice.

The TOUCHWATER semi-displacement sport catamaran results from various tests of several previous constructions. Hull drag is optimized in combination with allocation of buoyancy. The semi-displacement hulls effect a dynamic lift of the boat while riding and give quite a lot of agility. By hydrodynamic optimization the trim of the boat remains stable and is independant of the flow conditions in transition from displacement to semi displacement / planing mode.

Two boat types got special attention while developing the TOUCHWATER semi-displacement design:

17 ft wave piercing planing catamaran Wide planing hulls for excellent agility. Special efficiency in stronger winds and low waves. And regarding construction: The welding stress is analyzed easily due to the simple hull geometry.

18 ft wave piercing displacement catamaran   Constructed to the limit. Test of the hydrodynamic limits to design semi-displacement hulls with well balanced characteristics. Drag of the slender bow is reduced to the minimum. Excellent pass through the waves and running impressively smooth with least pitch. Just marginally reduced speed even with completely submerged leeward hull. And a very good basis for an additional hybrid foil system...

going for a tough ride

hands off the brake

submerged ... don't worry - it'll come up sometime

going for a walk