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Old 21st May 2009, 09:40 PM   #11
Join Date: Aug 2006
Posts: 537

Well I read it again and the author gives no evidence that boundary layer is thicker on a wet-sanded surface. Moreover where is that thickness measured from? Top or bottom? Regarding friction drag, matt is of course rougher than polished but does it make a sensible difference? We're not talking about mountains here. The question is more about wet or not, and how the hull will glide on a mix of air bubbles and water. But go polish everything. I'm quite curious to hear if you go any faster. Hello Tiesda, do you have an idea?

Last edited by Farlo; 21st May 2009 at 09:59 PM.
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