[Paddlewise] wave stuff

I apologise for not following this thread more carefully so I may have
things wrong here. Correct me if I do.

Some one wrote (I think) that they could determine a boat's displacement
from the wave system. Could they explain the mechanism for this.

Some one else said that a boat could "climb its bow wave". I have heard this
so often that I am beginning to believe it must be true. I don't understand
the physical mechanism for this either. Could some one explain  this.

Cheers,

John Winters
Web site address http://home.ican.net/~735769

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