I am slowly building a new 'built in' water tank in the keel of our Challenger 35 using fibreglass panels as in the photo below - this tank will replace a stainless steel tank that lived in this space previously.
I made up flat panels for the four sides - the aft panel is resting against the bulkhead at the end of the photo.
I still have to finish sanding away the remains of the white paint on the hull before I glass these panels in.
I will put in a couple of transverse baffles, and a Tek-Tanks inspection port at the aft end of the cover panel.
These cover panels will be bedded down onto fibreglass angles - one of these angles is shown duct taped temporarily on the port side of the tank.
I was thinking about lining the interior of the tank with a layer of glass cloth with epoxy resin, on the principle that it should be more resistant to osmosis et al than simply painting the interior of the tank with gelcoat - what are your thoughts on this?
It would be nice to have the interior of the tank all painted bright white, so if it is OK to use epoxy as a finishing coat, I could perhaps gelcoat it first before applying the epoxy, if the epoxy does not have an effect on the taste or quality of the water within (I have heard conflicting reports about this).
Changing tack, I am also trying to remove a substantial bronze skin fitting which housed the now defunct Stowe log transducer, and I am having a hard job getting the nut on the fitting to shift - there is not much leverage room for a pipe wrench, as can be seen in the photo below.
And this is the only way that the wrench will fit on the nut. I have tried adding extensions to the handle, walloping it with a hammer, but no go so far.