Ships – Hull or hull adjunct employing fluid dynamic forces to... – Stepped hull
Patent
1995-06-20
1997-11-11
Swinehart, Edwin L.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Stepped hull
114271, B63B 132
Patent
active
056852533
ABSTRACT:
In a Vee bottom planing boat running chines dry at top speed, running trim angle is increased by reducing wetted planing surface area by removing wetted planing surface at areas of least dynamic pressure and by shifting a portion of the trailing edge of the wetted planing surface forwardly, in combination, until running trim angle is slightly less than porpoising trim angle and such that the boat can be made to porpoise by trimming the drive when the boat is running at 70% to 100% of top speed.
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"Hydrodynamic Design of Planing Hulls", D. Savitsky, Marine Technology, Oct., 1964, pp. 71-95.
"Reduction of Planing Boat Resistance By Deflectin of the Whisker Spray, E.P. Clement, Dept. of the Navy, Research and Dev." Report 1929, Nov., 1964, pp. 1-23.
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Brunswick Corporation
Swinehart Edwin L.
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