Re: forward: Newbie Dave just got a San Juan 23

["DB27513 \(David\)" <db27513@xxxxxxxxx>]

Thanks for the comments Bob.  How does one calculate 200lbs of
flotation? I been looking over the space underneath the cockpit floor
(plan to move existing water tank I think) and its probably 5x3x1.5
(guess). If I filled that with foam, milk jugs, whatever, am I close? 
Also have about 900lbs of keel to worry about.... 

Im surprised this is not a much discussed issue.. or am I being too
cautious? 

Gene Adams says been sailing 60 years, and has not been a problem  ;-)

--- Bob Schimmel <bpschim@xxxxxxxxxxxxxxx> wrote:

> Hi Rudy:
> 
> Several years ago there was a discussion on what the buoyancy would
> be 
> if a SJ23 were full of water.  I can't remember who did the
> calculation 
> but the answer was that it would sink.  (surprise, surprise). 
> However, 
> the real surprise was how little flotation it would take to keep the 
> boat at the surface.  I think it required about 200 pounds, not more.
> 
> Most of the material in the boat is neutral buoyancy once submerged.
> The 
> problem is with floating heavy things like the outboard engine. Maybe
> 
> someone else can shed light on this discussion. You won't find it in
> the 
> archives.
> 
> Just for your info, a 1.5" hole will fill the hull to 10" deep in
> about 
> 10 minutes.  Don't ask!
> 
> -- 
> 
> 
> Kind Regards
> 
> Bob Schimmel
> (Always stay curious)
> 
> 
> bpschim@xxxxxxxxxxxxxxx
> 
> 
> 
> 
> 
> 
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