stbd h2o tank leak

[roverhi]

I've got a slow leak in the starboard water tank. Have access through what looks like a fairly newly installed approximately 4" plate. Can't see a whole lot and finding the leak looks to be a problem, let alone fixing it.

Anyone had to tackle this problem and some ideas on how to go about it?? Is the plywood over the tank glued as well as screwed?? How to get access?? Assume epoxy is the best thing to fix the leak or is there something else??

Aloha
Peter O.

[Jack Armstrong SV Windance]

On my boat the plywood cover is only screwed and is easily removable. Both my tanks were leaking and I exposed both of them. found no cracks but did find leaks at both outlets and one fill conection. Also found leaks on the access port flanges and replaced both and carefully caulked them
Jack Armstrong S/V Windance

[roscoe1]

Peter O
My starboard tank was leaking also and that was why I chose to put the gen set fuel tank there. On mine after I removed the bunk which was plywood it exposed the top of the tank To this I took a jig saw and removed the top it appears that this was installed after the hull was removed from the mold Due to curiosity I had to know where the water was coming from so I put a small amount of water on the tank, only the sides are remaining. and looked for the leak. With very little water in the tank it took several hours for the leak to show up. it was in the joint near the foreword corner a good sanding and a coat of
west systems 105 would have stopped it
suggestion. use baby powder put it on the hull under the sole as well as the starboard bunk. this will show the leak I'm sure it will be small. remove all the water with a wet-dry vac rough the leak area with sandpaper and apply a good two part epoxy.
Let it dry and your problem should be over If this don't fix the problem then the top will need to come off and a coat of resin and matt will need to be applied to the inside at the joint.
Roscoe