초록 ▼

Transitional time through the transplaning speed realm of a high speed sport/utility boat is reduced by narrow, concave planing tabs secured along the inside bottom surface of after-sponsons in alignment with the hull lifting strakes. Such planing tabs originate from the lower transom plane with an

Transitional time through the transplaning speed realm of a high speed sport/utility boat is reduced by narrow, concave planing tabs secured along the inside bottom surface of after-sponsons in alignment with the hull lifting strakes. Such planing tabs originate from the lower transom plane with an abrupt, 1 to 3 inch, step above the intersection edge of the hull bottom surface with the lower transom plane. From the lower transom plane, the planing tab length is terminated at or shortly past the boat propeller plane.

대표청구항 ▼

[ I claim:] [1.] In a boat having a V-bottom hull, the improvement comprising:a plurality of lifting strakes extending longitudinally forward along a bottom surface of said V-bottom hull from a transverse transom plane, said strakes being laterally spaced in increments from a vertical center plane a

[ I claim:] [1.] In a boat having a V-bottom hull, the improvement comprising:a plurality of lifting strakes extending longitudinally forward along a bottom surface of said V-bottom hull from a transverse transom plane, said strakes being laterally spaced in increments from a vertical center plane along the longitudinal center of said boat and on opposite sides of said center plane,a pair of after-sponsons on opposite sides of said center plane extending aft of said transom plane and delineating lateral boundaries of a propulsion unit mounting space aft of said transom, said after-sponsons having bottom surfaces intersecting with said transom plane at a stepped increment above a line of V-bottom surface intersection with said transom plane; and,planing tab surfaces disposed longitudinally along said after-sponson bottom surfaces adjacent said propulsion unit mounting space, said planing tab surfaces each comprising a longitudinally extending concavity between a pair of substantially parallel edges for laterally confining and downwardly shedding high speed water spray from a longituding center portion of the bottom surface of said V-bottom hull.