I think it is important to understand what the waveheight number means when
anounced in a weather report. They mean the "Significant Waveheight" and it
is a mean average of the top 1/3 of highest recorded waves in the recorded
period.
Steve

"Shaun Van Poecke" wrote in message
...
When sailing in shallow waters, what do you allow for swell/waves?
oviously this would depend a bit on the bottom, the boat, and the type and
size of waves/swell, but are there some good rules of thimb for this?

ie. if you are sailing through waters 10' deep and there's a 3' swell, do
you consider it as being 7' waters?

Shaun