<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by James.UK</i>
Useless piece of information.. Hulls.. Most powerboat hulls have a severe step in them (step up toward the stern) so as to create a mixture of air and water (bubbles-foam) under the hull to reduce suction.. [8)] [:)]
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The steps aren't to reduce suction, they're to reduce wetted area, wetted surface area is a big cause of hydrodynamic drag.
Hulls steps are only an advantage on planing hulls, when a hull moves through the water it creates a bow wave, a planing hull is one that is able to climb up its own bow wave and ride on top of it.
Aerodynamics
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