"Don Dando" wrote in message
...
What an interesting thing to theorize on!

At non-planing speeds a boat MAY have a different buoyancy factor and have
an almost un-measurable difference in speed. But at planning speeds
buoyancy is not a factor. That's my opinion!

Don Dando

In the real world if one has to wonder about he loss of speed or extra fuel
consumption when boating in various bodies of water one either has too much
idle time on their hands or cannot afford the extra nickel/gallon in fuel
consumption for their boat.

OMG.