Tom, That’s hull speed. Basically, your stern is in the trough of your bow wave. See the figures in the link below:
> http://www.boatdesign.net/forums/attachments/boat-design/5014d1137160350-displacement-hull-speed-calculation-rvaluepf.jpg > > <http://www.boatdesign.net/forums/attachments/boat-design/5014d1137160350-displacement-hull-speed-calculation-rvaluepf.jpg> - Paul E. 1981 C&C 38 Landfall S/V Johanna Rose Carrabelle, FL > On Jan 11, 2015, at 12:00 PM, cnc-list-requ...@cnc-list.com wrote: > > Date: Sun, 11 Jan 2015 11:54:00 -0500 > From: TOM VINCENT <tvince...@msn.com <mailto:tvince...@msn.com>> > To: C&C Forum <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> > Subject: Stus-List The stern squats at high speed > Message-ID: <bay168-w12245ac078651d15ee5bd5eed...@phx.gbl > <mailto:bay168-w12245ac078651d15ee5bd5eed...@phx.gbl>> > Content-Type: text/plain; charset="iso-8859-1" > > I was wondering if anyone else has the same problem that I have with my 36' > that has the 3 cylinder Yanmar 30 HP. While motoring if I increase the speed > the stern starts squatting the faster I go. I top out at 6.5 knots of speed > and the stern is way down. I have a martec 18'' folding prop and I do not > know the pitch. > > Tom Vincent > Frolic II 1979 36' C&C > >
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