초록 ▼

A power boat having an improved hull including concave aft sections, and which hull is capable of operations at a wide range of speeds with low relative horsepower for vessel weight and improved fuel economy is disclosed. In one exemplary embodiment, the boat is a 38 foot power boat having an improv

A power boat having an improved hull including concave aft sections, and which hull is capable of operations at a wide range of speeds with low relative horsepower for vessel weight and improved fuel economy is disclosed. In one exemplary embodiment, the boat is a 38 foot power boat having an improved hull which can achieve speeds of up to about 18 knots, with a 200 hp engine and which burns about 10 gals. per hour. The hull preferably includes a negative deadrise angle at the aft sections, the deadrise angle being positive at the bow and transitioning to a negative angle at the aft sections of the hull.

대표청구항 ▼

I claim: 1. An improved hull having a waterline, the hull including: a forward section having a deadrise angle as measured from a centerline of the hull relative to the waterline of at least about 50 degrees; a midship section having a deadrise angle as measured from a centerline of the hull relati

I claim: 1. An improved hull having a waterline, the hull including: a forward section having a deadrise angle as measured from a centerline of the hull relative to the waterline of at least about 50 degrees; a midship section having a deadrise angle as measured from a centerline of the hull relative to the waterline of at least about 28 degrees; and an aft section having a concave bottom as measured relative to a static waterline, the concave bottom being defined by a negative deadrise angle. 2. The improved hull of claim 1, wherein the deadrise angle is at least about negative 10 degrees at the aft section of the hull. 3. The improved hull of claim 1, further comprising a pronounced hollow area in the bottom of the hull, the hollow area positioned substantially below the waterline during operation of the boat. 4. The improved hull of claim 3, wherein the hollow area preferably begins about 40% aft of the bow and continues until about 70% aft of the bow. 5. The improved hull of claim 1, wherein the hull has a draft of less then about 3 feet during operation of the boat. 6. The improved hull of claim 1, wherein the bow has a waterline entry angle of about 13 degrees or greater.