[Public-list] Center of Buoyancy

[Roger L Kingsland]

Thanks Bob,

My fax # is (412) 252-1510.  Your center of buoyancy of 16.1' would put it
5.4' aft of the main bulkhead, just about at the center of the port bunk.  I
am also interested in CofB in the vertical dimension; hopefully, it is in
the fax info.

History revision looks great thanks for the effort.

Roger

----- Original Message ----- 
From: "Robert Kirk" <isobar at bcpl.net>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Sent: Monday, February 28, 2005 4:13 PM
Subject: RE: [Public-list] Center of Buoyancy


> Mike & Roger... Jack Horner, surveyor & former A30 owner gave a winter
> seminar a few years ago where he passed out a set of linbes, stability
> calculations, & polar plot  for the A30. I don't know where he got them,
> but he's also a marine archetect  so I guess he made them himself. (I can
> fax you a set of the handouts if you'd like. Anyway, he shows the Lateral
> Center of Buoyancy 16.1 feet aft of the bow.
>
> For info, he also calculates:
>
> Max GZ          1.352 ft @ 60 degrees
> Prismatic Coeff 395/384
> SA/Disp         15.2/15.4
> Beam/length     .29
> Ballast/disp    .37/.38
> Comfort ratio   .32/.31
> Pounds/in immer 676
> Moment to trim 1deg 775lbs
> Righting Mom @1deg 405 lbs
> Wetted Sfc area 204 Sq ft
>
> Hope those numbers mean something to you.
>
> Bob Kirk
> Isobar #181
>
>
> At 03:22 PM 2/28/05 -0500, Meinhold, Michael J wrote:
> >Has anyone seen a real lines plan or any digital format of the hull form?
J
> >or I could derive the CB and other properties from it.
>
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>



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