Patent ID: 6415731
Filing Date: 2002-07-09
Classification: B63B

Abstract:
A method of controlling the attitude of a boat at high speed through boat hull design, comprising the steps of:forming a pair of high speed steps in the hull of the boat adjacent to the stern on opposite sides of the keel between the chines to control the attitude of the boat at high speed, the length of the pair of high speed steps being not less than 10% and not more than 30% of the length of the hull, the width of the each of the pair of high speed steps being not less than 20% and not more than 40% of the chine to chine width of the hull, the depth of the each of the pair of high speed steps being not less than 1% and not more than 5% of the chine to chine width of the hull; and forming at least one pair of transition steps in the hull of the boat adjacent to the pair of high speed steps on opposite sides of the keel and between the chines to provide a transition to the pair of high speed steps, the length of the at least one pair of transition steps being not less than 10% and not more than 30% of the length of the hull, the width of the each of the at least one pair of transition steps being not less than 20% and not more than 40% of the chine to chine width of the hull, the depth of the each of the at least one pair of transition steps being not less than 0.5% and not more than 2.5% of the chine to chine width of the hull.