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Re: Positive Floatation




Water weighs about 62-63 lbs/cubic ft, I think, so to support 3000 lbs you
would need to displace (3000lbs)/(62 lbs/cubic ft)=48.4 cubic feet.

----- Original Message ----- 
From: "DB27513 (David)" <db27513@xxxxxxxxx>
To: <sanjuan23@xxxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, January 12, 2005 11:28 AM
Subject: Positive Floatation


> Well Im back on this kick again.  Last time emailed this group about
> the topic (having children on board, what to do if the worst happened:
> large hole in hull), I came away with the concensous conclusion: dont
> worry, be happy.  But having sailed 2 weeks ago, a mile or so out into
> the Nuese River (NC) and realizing that in 55 degree water, with
> outgoing tide or ebb, if the worse happened, saving someone rescueing
> us, we probably wouldnt survive.
>
> Soooo, my thoughts before were the following: portable waterproof radio
> & cell phone in waterproof 'fannypac', plus a 3 person inflatable dingy
> with enough CO2 cartidges to inflate quickly, all kept handy mounted to
> the stern pulpit.
>
> Talking with someone else, they suggested bladders tucked away in
> remote storage places on the boat.
>
> So heres the (long winded) question: how many cubic feet of 'bladder
> would I need to make sure a 3000lb SJ23 wouldnt go to the bottom if the
> hull cracked?
>
> Dave Backus
> SJ #642
>
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