ak-guy
Senior Member
My 36 year old Allweather has a 112 gallon fuel tank which is a lot for a boat that burns 1/2 to 3/4 gallons an hour. The tank is the floor of the main cabin, You are walking on the steel top. I am not sure what kind of steel it is but it is magnetic and fairly thick as there is no flex. The rest of the tank is fiberglass. I recently fill up the tank to within a couple inches of the top, I had never filled it that much before. The boat is on a mooring and sometimes is rolling quite a bit in certain conditions. Today I noticed that there are several places around the perimeter of the top of the tank that are leaking slightly. The fuel in the rough conditions is sloshing up around the edges. There are no leaks anywhere else. The amount is very small but in several places. There is a raised edge all around the perimeter that joins the steel tank top to surrounding plywood. The lid must be fastened somehow to the stringers and sealed somehow. It would be fairly straight forward to grind down that ridge and redo it but the new bond to the steel might be a problem.