[Public-List] A30 Hull Prismatic Coefficient

Jonathan Bresler 262alberg30 at gmail.com
Tue Jun 29 15:31:58 PDT 2021


395 is the displacement / length ratio of the Alberg 30.
The Angelfire site miscopied the data.
Guessing that they took data from the drawing
https://www.bresler.org/Sailing/Logs/Drawings/A30_hull_lines_and_stats.pdf

Cp is listed as 0.52

On Tue, Jun 29, 2021 at 1:14 PM David A. Bardsley via Public-List <
public-list at lists.alberg30.org> wrote:

>    I found similar numerals, certainly 0.395,  printed on a different site
>    https://www.anglefire.com/ca/Alberg30/tech spec.html  where they are
>    completely upfront about copying them from a different source.
>    On Jun 29, 2021 11:01, Wes Gardner <wesgardner1952 at gmail.com> wrote:
>
>    Here's a site with the Cp shown as 395...not sure about that number
>    [1]https://www.angelfire.com/ca/Alberg30/techspec.html
>
>    On Tue, Jun 29, 2021 at 8:09 AM David A. Bardsley via Public-List
>    <[2]public-list at lists.alberg30.org> wrote:
>
>         Kris,
>         I've decided to "stay in my lane" so to speak and being an
>      electrical
>         engineer focus on the volts and amps leaving the transmission
>         implenentation to the good folks at thunderstruck-rv.
>         I also received a quote from electric yacht for their system, but
>         decided against their approach.
>         Dave
>         Ginseng 574
>      _______________________________________________
>      These businesses support your Association:
>      [3]http://www.alberg30.org/store/A30supporters.html
>      Please support them.
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>      [5]http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>
> References
>
>    1. https://www.angelfire.com/ca/Alberg30/techspec.html
>    2. mailto:public-list at lists.alberg30.org
>    3. http://www.alberg30.org/store/A30supporters.html
>    4. mailto:Public-List at lists.alberg30.org
>    5. http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
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-- 
Jonathan M Bresler
S/V Constance Alberg 30 #262
Annapolis/Eastport MD



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