Water under port engine and wall

[drewp]

After coming back to my boat after two months I discovered water under my port engine. This is the first time water has pooled under the engine, I have always had some water in the bilge. I started investigating and found wet carpet under the couch against the port wall. I removed the two panels on the wall - one for access and the other for 'extra battery' (and I am really glad there was not a battery there) - the board in the battery compartment was very wet. There is a round access cap toward the aft that I unscrewed, giving access to where the fuel vent is - that area was wet as well. Looking up, there was very wet foam sheets.

Has this happened to anyone else?

I am drying out the boards, trying to dry the foam, and still trying to find the source of the water. I am pretty sure it is rainwater - but again this is the first-time water has pooled under the engine.