All surfaces have a sealer coat of epoxy, followed by a layer of fiberglass
cloth adhered with two layers of epoxy. There is virtually no possibility
of water entering the plywood - unless we hit a rock at cruising speed (10
knots). Even that would be unlikely to breach the hull.
I'm apologize to people on this list who have no interest in the non-owfs
aspects of this thread.
Peter
On Mon, Jul 8, 2013 at 12:45 AM, Colin Law <clan...@googlemail.com> wrote:
> On 7 July 2013 22:47, Peter Hollenbeck <pwhb...@gmail.com> wrote:
> > How would I probe? The compartments are sealed.
>
> I was thinking that if the chamber was wet inside then probing the
> wood on the exterior would show damp seeping into the wood. That may
> not be true though, depending on the material used.
>
> Are you sure it is a good idea to have completely sealed chambers on a
> wooden boat? You would only need a half inch hole with a removable
> cover to allow a check for water ingress. In addition these could be
> opened when the boat is out of service to ensure that the chamber is
> ventilated to reduce the likelihood of rot developing. Though a
> slightly larger hole might be advisable for ventilation.
>
> Colin
>
> > Whatever solution I finally
> > adopt there will be at least two wires from each bilge compartment
> leading
> > to the areas above the floor (deck). The wires will be sealed so that
> they
> > don't provide a passage for water.
> >
> > If anyone is interested, here is our project:
> > http://www.hbeck.net/pics/projects/skipjack/skipjack.html
> >
> > The implementation of the moisture sensing solution will probably be in
> > September or October, after the boat is turned upright and we begin work
> on
> > the interior.
> >
> > OWFS is a great project. I use three RPis to drive three 1wire sensors, a
> > Davis weather station and three still webcams,
> > Thanks very much to everyone.
> > Peter
> >
> >
> >
> >
> > On Sun, Jul 7, 2013 at 1:10 PM, Colin Law <clan...@googlemail.com>
> wrote:
> >>
> >> On 7 July 2013 21:05, Peter Hollenbeck <pwhb...@gmail.com> wrote:
> >> > Elegant solution. Would I need a computer? Could I just do it with a
> >> > multimeter? I love my Raspberry Pis but maybe one isn't required in
> this
> >> > case.
> >>
> >> Would you be better just with a cheap moisture meter [eg 1] and probe
> >> it from the outside occasionally, as if the inside of the chanber is
> >> wet then presumably some of this would soak through and make the wood
> >> damp.
> >>
> >> [1]
> >>
> http://www.amazon.co.uk/Handheld-Wood-Moisture-Meter-MD-812/dp/B00118SL6A
> >>
> >> Colin
> >>
> >>
> >>
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