Turbulent stabilizing venturi system

Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having fluid channeling or entrapping configuration

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Details

114289, B63B 120

Patent

active

060679239

ABSTRACT:
A hull configuration for the planar surface region in the tunnel area between hulls(pontoons) in a fishing type catamaran. In the tunnel bottom surface is a raised frontwardly located center section adjacent the bow forms a venturi where low pressure is formed by incoming waves passing about the squared off rear portion of the center section. Behind the center section is a raised longitudinal stabilizer running to the rear(stern) of the boat which diverts and splits incoming air coming from the bow section to each side of the tunnel. Adjacent to the center section are two raised side stabilizers which straighten out incoming air and reduce the turbulence effects therefrom. On the rear ends of the two side stabilizers and the center section are through-holes that allow for venting excessive pressure from inside the tunnel to the interior of the bilge of the boat. Keel pads on the bottom of each pontoon hull each have exterior raised ridges (interior of lifting strokes) along the front portion flush to a rear portion surface. The keel pads give an extra planar surface for lifting the boat from the water.

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