Water in hull

[LTsHoney]

When I removed a transducer from the starboard side of the transom on my 18' CC, water began to pour out of the screw holes. I couldn't figure out where this water was coming from because the inside of the hull was dry above that area. At least a quart or maybe even a gallon of stale water came out, so I experimented and ran water onto the deck and watched the water not only drain out the scuppers, the bilge drain, but also the screw holes. I enlarged one of the screw holes and found a void between the bottom of the inner hull lining and the bottom of the boat. This area seems to capture water but I can't figure out where it originates. I've since installed a drain plug where the large screw hole was and now I open this along with the bilge drain to let the water out. No one can explain this cavity in the hull design. I'm not sure it doesn't exist on the port side either. I'll live with this until someone can show me a resonable fix. Good luck with your water situation.
LT