Fresh water between Bilge area and keel plate

The fresh water pump does not start and stop, which leads me to believe it is from either rain or washing. Even when I changed the anode in the heater, something I recommend everyone does every 1-2 years, the water that spilled from the heater below the galley ended up in that area leaving the bilge pump area completely dry.

It is around 20cm wide and in between keel plate and the bilge. Both sides are dry, except when it overfills, so it is the lowest point in the boat. It has just unfinished fiber glass at the bottom, which is alarming as I don't think it is good to keep it wet. Around 20 lts of water can be removed from there before even a drop shows in any bilge.

Anyone noticed such a problem before?

I changed the pressure valve on the heater with a new one and lowered the max temp. The result was much less water in the hull inaccessible are.

Our ACs are connected to the grey water sump containers, so no condensation from there.

The water tank does not leak when over filled and we have been keeping it at 80% anyway.

One area that is a source of fresh water is the cover above the generator under the STBD helm. This area open to any heavy rain, then eventually water finds its way to the area behind the garage then end up near the shaft.

Also, the mast can be a source although I did not assess how it will end up in the gap as there is a bilge pump under the mast that really is never on even in heavy rain as the amount of water that ends up there is insignificant.

The amount of water is not significant and is around 1-3L a month.

Please keep sharing your findings.