Swiped off the internet: POUNDS PER INCH IMMERSION (PPI): The weight required to sink the yacht one inch. It is calculated by multiplying the LWL area by 5.333 for sea water or 5.2 for fresh. The PPI usually increases as the hull sinks into the water as the LWL area is also increasing due to the shape of the hull above water.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On Mon, 29 Oct 2018 at 13:58, Richard Bush via CnC-List < cnc-list@cnc-list.com> wrote: > Rob; is the calculation of 875 pounds true for all boats or only the > 35-3? How would I find or calculate the numbers for my 1985 37 CB? > Thanks! > > Richard > s/v Byshmark4; 1985 C&C 37 CB; Ohio River, Mile 600; > > Richard N. Bush > 2950 Breckenridge Lane, Suite Nine > Louisville, Kentucky 40220-1462 > 502-584-7255 > > > -----Original Message----- > From: Rob Ball via CnC-List <cnc-list@cnc-list.com> > To: cnc-list@cnc-list.com <cnc-list@cnc-list.com> > Cc: Rob Ball <r...@edsonintl.com> > Sent: Mon, Oct 29, 2018 1:24 pm > Subject: Stus-List C&C 35-3 Actual Drive > > The boat was designed with a depth of 6’-5 inches in salt water. > If it were floating in fresh water it would sink .3”, so the draft would > be 6’-5-1/2” > It takes 875 pounds to sink the boat one inch. > So if there is double that added since building, then the draft would be > 6’-5” plus .3” plus 2” . . . > Total 6’-7-1/2” > Hard to believe 6’-10” – but maybe it was floating in heavy water . . . > > Cheers, > *Rob Ball* > Chief Design Engineer Tel > 508-995-9711 > [image: http://www.edsonintl.com/signature/image001.gif] > Edson International > Email: r...@edsonintl.com <a...@edsonintl.com> [image: Edson - > Home] <http://www.edsonmarine.com/> > > -----Original Message----- > From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of > cnc-list-requ...@cnc-list.com > Sent: Monday, October 29, 2018 12:00 PM > To: cnc-list@cnc-list.com > Subject: CnC-List Digest, Vol 153, Issue 154 > > Send CnC-List mailing list submissions to > cnc-list@cnc-list.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > or, via email, send a message with subject or body 'help' to > cnc-list-requ...@cnc-list.com > > You can reach the person managing the list at > cnc-list-ow...@cnc-list.com > > When replying, please edit your Subject line so it is more specific than > "Re: Contents of CnC-List digest..." > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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