I'd be very interested in hearing your explaination of how "induced drag"
occurs when moving a hull through water at or below hull speed.(or air for
that matter). I have a pretty good understanding of induced drag when moving
keels and rudders...hulls OTOH, I don't know about. Also, every formula that
I've looked at for calculating the induced drag coefficient is a square
function, not cube. But I'm always willing to learn when presented with a
valid argument based on facts.

"JAXAshby" wrote in message
...

the induced drag on a hull goes up at the cube of speed and has nothing to
do
with "climbing the bow wave". A cubic function is mathematically well
behaved,
meaning nothing untoward happens anywhere on the curve.