G'day,
More righting moment, less weight, for each unit of power. Longer
means less wave effects. But the Formula 40 cats and tris used to
beat the 60 and 80 footers, and I suspect a Tornado would beat Raw
Nerve (fastest offshore cat in Aus) around a Sydney harbour course, so
it ain't necessarily so.
regards,
Rob
On Thu, May 1, 2008 at 4:41 PM, Doug Haines <doha720@yahoo.
>
>
>
>
>
>
> Hi all,
>
> Why apart from longer (lw) hull is a bigger boat faster?
>
> Doug
>
> Rob Denney <harryproa@gmail.
>
>
> G'day,
>
> Should not be a problem. The speed loss from wakes coming together is
> pretty minimal from such low wake hulls anyway. I doubt there would
> be any noticable effect.
>
> regards,
>
> Rob
>
> On Wed, Apr 30, 2008 at 8:14 AM, George Kuck <chesapeake410@
> wrote:
> >
> >
> >
> >
> >
> >
> > Hello Rob ,
> > What would you think of reducing beam on 40' Harryproa from 22' 3" to
> > 18'-8"(47%) ? Would there be any problem with bow wakes coming together
> and
> > causing added hydrodynamic resistance ?
> >
> > Happy sailing,
> > George Kuck,
> > Chestertown, MD
> >
> >
> > Rob Denney <harryproa@gmail.
> >
> >
> > G'day,
> >
> > Probably not. I have reduced Elementarry from 4m down to 3.5 (53% to
> > 47%) and feel it could go less, particularly with the small rig
> >
> > regards,
> >
> > Rob
> >
> > On Tue, Apr 29, 2008 at 3:06 PM, Robert <cateran1949@
> > >
> > >
> > >
> > >
> > >
> > >
> > > Have been wondering if overall beam needs to be quite as wide. Are
> > > there other advantage other than righting moment and deck area, such
> > > as avoiding wave interference. I wouldn't have though it so important,
> > > considering how little wake they leave. The reason I am asking is for
> > > ease of getting through locks and marina berthing, If I have to spend
> > > a bit of time in Darwin. 20% less beam would mean 10% less wind before
> > > reefing, and 40% less weight in the cross beams. It should still do 14
> > > in 15, but would have to be a bit more careful after that. My figures
> > > give a monocoque Harry 20% narrower than normal as about the same
> > > weight, and about 10- 20% extra wind drag. But an extra 30%-50%weight
> > > penalty with the extra crap that comes on board
> > > Robert
> > >
> > >
> >
> >
> >
> > ____________
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> > now.
>
>
>
> ____________
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