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

[JT]

Dear John and Richard,

Agreed that these boats are indeed bulletproof! In fact, her excellent 
stability curve was one of the main reasons we bought an A30. I saw a 
lot of her wooden sisters on a recent trip to the Baltic...

I should've explained myself.

Baraka was a wreck when we found her in '06. After a hiatus, we're back 
to putting her to rights (so to speak)! We'll eventually take her 
offshore and are working with a rigger to ensure her replacement spars 
and standing rigging are properly sized for that job. While he can work 
from standard tables, he said the best way was to perform an incline 
test, as in Brion Toss's book "The Complete Rigger's Apprentice," p. 
136: level the boat in the water, then line up several of your buddies 
along the toerail after noting their weights. Note the heel in degrees. 
(Hopefully, it's a handy 10 degrees.) By measuring the distance they are 
from the CL of the boat, and multiplying their aggregate weight by that 
distance, then multiplying again by 3 (if you got 10 degrees), you get 
the righting moment (RM) for the boat at 30 degrees of heel.

This morning, my partner-in-crime managed to perform this feat on an A30 
in Clear Lake, Texas. Our figure was 4,459 foot-pounds for 10% of heel.

Knowing that a lot of folks had undertaken complete restorations, I was 
wondering if anyone else had done this, and if so, whether their results 
were close to ours?

Regards,
Jeff

John Birch wrote:
> The Desirable & Undesirable Characteristics of Offshore Yachts has a 
> table which showed the A-30 had the second best rating second only to 
> the Ludders 44. The A-37 came in fourth out of something like 75 boats.
>
> The Book was released after the disaster of the Fastnet Race and was 
> edited by John Rosmenyari (sp)
>
> Albergs are damn fine boats.
>
> Carl had some game
>
> Best
>
> John
>
>
> ----- Original Message ----- From: "Richard Mair" <ramair49 at gmail.com>
> To: "Alberg 30 Public List -- open to all" 
> <public-list at lists.alberg30.org>
> Sent: Saturday, May 08, 2010 5:44 PM
> Subject: Re: [Public-List] Incline test on an Alberg 30?
>
>
>> No test but look at capehorn.com..go to the link the great voyage of
>> Jean-de-sud..
>> Tells how he was rolled in the southern ocean.We know they will come 
>> upright
>> again
>> Richard 609
>>
>> On Sat, May 8, 2010 at 5:04 PM, JT <speedbump at austin.rr.com> wrote:
>>
>>> Dear All,
>>>
>>> I'm wondering if anyone has performed an incline test on an Alberg 
>>> 30 to
>>> determine her righting moment? If so, could you please tell me what 
>>> your
>>> results were?
>>>
>>> Many thanks in advance!
>>>
>>> Sincerely,
>>> Jeff Twining
>>> #58
>>>
>>>
>>> -- 
>>> -JT
>>> South Austin, Texas, USA, North America, Western Hemisphere, Earth, 
>>> Solar
>>> System, Milky Way, Local Group
>>>
>>> Faith consists in believing what reason cannot...
>>> In order to believe something, it is not enough that it should be 
>>> possible.
>>> -Voltaire
>>>
>>>
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>
>
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
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>
>

-- 
-JT
South Austin, Texas, USA, North America, Western Hemisphere, Earth, Solar System, Milky Way, Local Group

Faith consists in believing what reason cannot...
In order to believe something, it is not enough that it should be possible.
-Voltaire



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