On Wed, 28 Jan 2004 09:34:30 -0500, The Count
wrote:
it appears to be a glass/ply/glass
sandwich. If the sandwich is rotten then it would be a major fix. Any
advise on this condition in other boats? SHort of taking a awl to it I
don't know if there would any indication at the floor or hull interface that
the ply had given out

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The usual techniques apply, best performed by a professional surveyor
of course.

Walk around on the decks and see if there is any unusual flex or noise
as you step. Those are warning signs. Tap with a plastic hammer and
listen for spots that do not sound solid.

The areas at biggest risk are where highly stressed fittings such as
sail tracks and chain plates are installed. These fittings frequently
work under load and allow moisture penetration into the core. Also
look for stains, mildew and discoloration under the deck in these
areas.