Quote:
Originally Posted by Woodsy
You do not understand how planing hulls work... while there will be always be "some" mass in the water, at speed it is a fractional amount of the total boat weight/displacement.
Boats with planing hulls are designed to rise up and glide on top of the water when enough power is supplied. These boats may operate like displacement hulls when at rest or at slow speeds but climb toward the surface of the water as they move faster.
Boats with planing hulls can skim along at high speed, riding almost on top of the water rather than pushing it aside. The faster a planing hull goes in the water.. the less water is displaced by the mass of the boat. The less boat in the water, the less energy the boat wake has.
Think of a flat stone skipping across the top of the water...
Woodsy
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I do understand the inverse function of displacement and speed. That is why I question wave speed. A higher wave speed... even if the wave has a lower amplitude... results in a greater conservation of kinetic energy over a specified distance. That is what the scientific studies showed.
The faster boat is displacing less water mass at a higher rate of speed.