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Re: [PSUBS-MAILIST] How much HP?
Hi - my fife cents on the moki exchange server.. regards Carsten
http://www.prismnet.com/~moki/subfiles
DJACKSON99@aol.com schrieb:
>
> Wow! And I need to move 2.5 Tons and I know gas engines HP is often over rated and jet pumps are often considered less efficient. Its incredible how far apart the too books are. Guess I better start looking at 200 HP.
>
> Anyone know a Marine Architect that would have a look for cheap of free?
>
> In a message dated 6/15/2003 7:56:05 PM Eastern Standard Time, tlohm@juno.com writes:
>
> > On Sat, 14 Jun 2003 22:37:21 -0400 DJACKSON99@aol.com writes:
> > >
> > > What I need to know is how much
> > >horse power will be needed in order to get the boat to plane and at
> > >what speed the boat will plane? I am not so interested in going 30 mph
> > >but I do want to be sure that the engine selected can obtain planing
> > >speed.
> > >
> > >Length 20 feet
> > >Water Line Length: 17 feet
> > >Beam: 50 inches
> > >Hull: 12 degree V-Hull
> > >Draft: Aprox 16 inches
> > >Displacement: Aprox 4400 to 4900 (depending on engine weight)
> >
> > >From John Teale's book "How to Design a Boat," There's a
> > chart on page 83. Using the chart: 20 feet and 2.0 tons;.
> > from "Transom and very flat stern," it looks like 15 knots out
> > of 89 horsepower.
> >
> >
> >
> > Mike Holt
> >
> > >Design Images:
> > >http://members.cox.net/djackson001/sub/Sub_H7_files/Sub_H7.
> > htm
> > >
> > >I certainly appreciate any help!
> > >Doug Jackson
> > >