[Public-list] Center of Buoyancy

[Horton, Ross G.]

Bob,

I would love to get a copy of the handout from Jack Horner, especially
the lines. I'm sure that many others would also.  Would it be possible
to send a copy to George to be put on the website?

Ross Horton
Delphi 40


Message: 4
Date: Mon, 28 Feb 2005 16:13:19 -0500
From: Robert Kirk <isobar at bcpl.net>
Subject: RE: [Public-list] Center of Buoyancy
To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
Message-ID: <4.3.2.7.2.20050228160053.02d07880 at mail.bcpl.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

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







 1109687747.0