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Old 11-29-2018, 12:57 AM   #21
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I know this is a year old but the first thing I would have asked the OP is did he look up to see if what was going on was in fact above, because it looks like debris falling down and piling up on the batten seams.
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Old 11-29-2018, 06:11 AM   #22
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Not positive ..

But here is an explanation of salt damage to wood...

Techline_06-2011-001.pdf
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Old 11-29-2018, 01:24 PM   #23
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As noted in this thread there could be any number of reasons for this. And while no thru hulls are present in the picture, it could still be a stray current issue. Zincs could be exhausted, could be over bonding, a common problem in wood boats. Could be from something as simple as an electrical cord laying in the wrong place. Hull planking on a Chris is fairly thin, under an inch even on a big one, so there isn't really a lot of wood between inside and out. Saturating the area with epoxy will be a temporary fix but the wood will likely need to be replaced. Its pretty hard to diagnose such issues from one picture. I worked on wood boats as a shipwright for nearly 30 years and I cannot say with certainty what caused this from whats seen here.
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