I’ve had one rather peculiar problem with my boat over the years, and I think I may have figured it out and to some extent, have resolved it. Basically, when my boat was about 20 years old or so, the hatch cover at the cabin entrance became soft with wet rot.
The picture below is not my boat, but the same model, and shows the hatch cover in an open position.

The cover was made of ¾” plywood with a white Formica top and varnished on the bottom. The edges were tapered ...
