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West Wight Potter Mailing List maintainer
dfarrell@ridgecrest.ca.us
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>Very rough estimates show the capacity of the P-19 cockpit is about 36 cubic
>feet (6 x 1 x 1 above each bench, 6 x 2 x 2 in the well). 36 cubic feet is
>62,208 cubic inches which is about 264 gallons.
Thats about what i figured (i think i guessed 32) but for kicks I'll do some
actual measurements later.
>When flooded to the brim the
>cockpit will hold about 2200 lbs of water. With this weight so high in the
>boat, how will it handle? Will this water weight overcome the righting
>moment of the keel?
I think in reality, however, you couldn't fill it to the brim. The only reasonable
way it could fill like that is a massive wave over the stern (which might knock
you over anyways), and since there would obviously be waves, the rocking of
the boat would immediately spill dozens of these gallons over the sides (and
probably stern).
>A one inch drain system will take about 26 minutes to
>drain the cockpit. A 4" scupper will clear it in less than two minutes.
did you take into account the 2' head you'd have in this scenario? (yes or no
is fine, I don't need to see the calculus :) Anyone have any ideas for a drain
system for a P19 of larger than 1.5"? seems to me to go any larger you'd almost
have to make the P19 drain go straight out the transom from the back of the
cockpit well, like a P15 does, rather than down through the sole. I'm not sure
how you'd valve a 4" hole!
I guess multiple 1.5" drains would help too. But I think this is more of a theoretical
problem than a practical one for most of us. A wave big enough to do that to
the boat is likely to knock it over (emptying what it filled), or crush the
boat completely.
Sometimes on this list we're like Yugo owners contemplating our vehicle's performance
in the Daytona 500...
Maybe when I get some free time I'll block my drain, flood my footwell with
a known quantity of water, then measure the time it takes to drain.
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