17018Re: Toto question
- Mar 1, 2008Just a reminder. As drawn by Jim, the only flotation chamber is
located in the stern.
My .02. Adding a bow flotation chamber - as many have done - should I
suspect, double the flotation.
--- In Michalak@yahoogroups.com, "captreed48" <captreed@...> wrote:
> > Toto as designed has 180 lb floatation.
> This is the volume of the flotation chamber in cubic feet times the
> weight of water in a cubic foot. 180 lbs floatation would float the
> weight of the boat if swamped. Subtract the weight of the boat from
> 180 and you might get 120 lbs. The normal life jacket has 22 lbs of
> bouyancy. So, the floation in the boat might keep the boat plus 5
> adults in the water alongside of it afloat, all of them wet and
> My Piccup Pram has about 760 lbs of floatation, so if it were upside
> down I could put 3 adults on the bottom and we would all be completely
> dry...that is if we could get out of the boat and onto the bottom
> without getting wet.
> This is different than the displacement which is the weight of the
> water that the boat displaces. If you take the normal displacement
> given on a set of plans and subtract the boat weight you have the
> weight of allowable crew and supplies. e.g. My Piccup displaces 490
> lbs. Subtracting 100 lbs boat weight gives 390 pounds of crew and
> supplies. Or 2+ adults. I've had 4 adults in it and it is slow, but
> sails fine that way.
> Jim gives his expected displacement on his plans at the waterline at
> the bow.
> Whew. That's a lot of words when you already have your question
> answered. Sorry. I just got started and couldn't stop writing.
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