[Public-List] Incline test on an Alberg 30?

[Mike Lehman]

She comes back by herself...first you dip the spreader tips in the water, then you yell at the crew to hold on, then the boat rights itself...but it IS a scary ride!!!!!!!! When healed way over, you have no control, bit as soon as the rudder goes back in the water she turns very fast (since you are going forward at 10+ knots) - next thing you know...you 'think' you are in control again...until the next broach.





.¸¸.·´¯`·.¸><((((º>
 
 






 
> Date: Sat, 8 May 2010 21:04:19 -0400
> From: sailor at aweigh.com
> To: public-list at lists.alberg30.org
> Subject: Re: [Public-List] Incline test on an Alberg 30?
> 
> >
> > " That means that you have to roll us 170 degrees before the yacht stops
> > trying to right herself."
> >
> > Hmm! 170 degrees means the mast is 10 degrees short of straight down. How
> > does one trim the underwater sails?
> >
> > Dennis
> > s/v Ferrity
> >
> >
> >
> >
> > On Sat, May 8, 2010 at 7:06 PM, Gordon Laco <mainstay at csolve.net> wrote:
> >
> >> Anyone concerned about our boats' stability characteristics should have a
> >> squint at C.J. Marchaj's book 'Seaworthyness, the Forgotten Factor'. It
> >> is
> >> a learned and uncompromising examination of trends in yacht design...
> >> While
> >> the A30 is not named, her type is defined as an ideal.
> >>
> >> While traditional or classic hull types may have lower resistance to
> >> heeling
> >> initially, the combination of deep full keels and narrowish beams result
> >> in
> >> very high LPS numbers. LPS, Limit of Positive Stability, is the number
> >> that
> >> counts. The A30's LPS is somewhere around 170 degrees. That means that
> >> you
> >> have to roll us 170 degrees before the yacht stops trying to right
> >> herself.
> >>
> >> Your average beamy, fin-keeled yacht, the type that clobbers us in light
> >> airs and may even gloat about its 'stiffness' in 15 knots of wind, could
> >> have an LPS between 80 and 110 degrees. Those low numbers mean that over
> >> a
> >> very wide swath of a circle (roll) they are as stable upside down as right
> >> side up. The extreme of this is a multi hull yacht, which has incredible
> >> stability for the first 20 or 30 degrees of heel... And is then so stable
> >> when capsized that in cannot be righted without outside help.
> >>
> >> The A30 and its type are very good seaboats. Provided you can keep the
> >> sea
> >> out, in the Alberg 30 we have a boat that will continue to look after its
> >> crew through extreme conditions. (but I DO wish Mr. Hansen had followed
> >> Mr.
> >> Albergs wishes and given us lighter fractional rigs and lead ballast..)
> >>
> >> Gord #426 Surprise
> >>
> >
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