Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
I thought I had a leak in my 250. I would find water on the galley countertop. No deck protrusions in the area. Came to the conclusion I was getting condensation on the roof and it was dripping on the counter. I started keeping DriZAir on board between visits and it stopped happening.
Is the moisture on the top or under the cushion? A few parallel colored chalk lines, perpendicular to suspected water flows in suspicious areas might help sleuth out the source. The slightest trickle will wash little parts of them away, pointing to culprit.
If it's condensation (a real issue in boat cabins), I suggest a solar vent (Nicro or Marinco) to exhaust moist daytime air at night from the cabin, drawing in air that has lost its moisture outside as dew. It works, and keeps down mildew in cushions and on surfaces. And the "solar" part means no wiring or battery drain.
Dave Bristle Association "Port Captain" for Mystic/Stonington CT PO of 1985 C-25 SR/FK #5032 Passage, USCG "sixpack" (expired), Now on Eastern 27 $+!nkp*+ Sarge
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.