Ships – Hull or hull adjunct employing fluid dynamic forces to...
Patent
1992-12-09
1993-08-03
Sotelo, Jesus D.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
114 56, 114 61, B63B 100
Patent
active
052319490
ABSTRACT:
This invention is an improved boat hull design for stable operation as a planing-type hull in a wide range of water conditions. The hull is comprised of a substantially V-shaped central hull portion and a pair of adjacent side floats, one on each side of the central hull. The inner walls of the side floats are substantially vertical, and the floats are stepped upwardly at approximately midships, such that the rear portion of the side floats is substantially horizontal, or parallel to the plane of the water surface. At least one pair of flat surfaces are formed along the bottom portion of the hull positioned at the intersection of lowermost strakes and steps formed on each side of the hull, so as to provide substantially improved stability and attitude when running at high speed on rough water. A dihedral tunnel is formed by the concavely-curved surfaces of the central hull in combination with the inner walls of the side floats. The inner walls extend rearward beyond the steps to approximately 3 feet forward of the stern or transom, becoming "traps" that contain hydrodynamic forces helping to provide lift under the hull.
REFERENCES:
patent: 3148652 (1964-09-01), Canazzi
patent: 3303809 (1967-02-01), Ross
patent: 3625173 (1971-12-01), Mitton
patent: 3996869 (1976-12-01), Hadley
patent: 4192248 (1980-03-01), Moyer
patent: 4348972 (1982-09-01), Parsons
patent: 4492176 (1985-01-01), Arima
patent: 4655157 (1987-04-01), Sapp
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