When we bought Irish Eyes the two water tank covers were gray plastic. The holding tank cover was plywood with fiberglass on its interior surface. I replaced the plywood holding tank cover with 1/2" gray PVC that I bought from McMaster Carr. It was identical in appearance to the existing water tank covers, so I assume the water tank covers are PVC.
The forward water tank cover has a single 4" Beckson inspection plate in it. The aft water tank cover has pair of inspection plates. All three of the holes for the inspection plates were reinforced around their edges by having a approximately 12"x12" piece of the same gray plastic with a hole in its center glued to the underside of the water tank cover with the hole in the cover and hole in the reinforcement lining up. You can feel and see the reinforcements through the open inspection plates.
My guess is that the reinforcements were glued in place with standard PVC cement after the two surfaces were cleaned with PVC cleaner. Both should be safe for water contact as both are routinely used in house plumbing. C-clamps through the hole should hold the reinforcement in place while the glue hardens.
I did not add the second thickness of PVC to my holding tank top.
Please be aware of toxicity in whatever glue or epoxy you use to mend a water tank. Some of this stuff takes a while but is cumulative over time and can cause some undesirable health issues.
s/v Grace PSC34-163
05-08-2012 12:51 PM
Re: PS34 Water Tank Issue
I have thought of that piece of plastic as a baffle, rather than a stiffening device. It helps to contain the water somewhat. I am of the opinion that it should be re-secured.
05-06-2012 12:55 PM
Re: PS34 Water Tank Issue
Seems to me that's an odd way to add support, wouldn't it be better to just add some vertical divider to add support? I'm curious to what a newer 34 has.
05-06-2012 12:06 AM
PS34 Water Tank Issue
My Pacific Seacraft 34 has a water tank under the quarterberth, and has two 4 inch access holes for cleaning the tank. Today when I opened up the access holes I saw that a plastic stiffening piece that had been glued to the underside of the water tank had fallen off and was now at the bottom of the water tank.
Because the top of the tank seems very think and strong, it seems to me that the reinforcing piece that came off is not necessary. The top of the tank around the 4 inch access opening seems very stiff and strong. I am therefore considering removing the reinforcing piece from the bottom of the tank and not using it.