Join Date: Apr 2006
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Re: What is going on with my keel joint??
Going out on a limb to try guessing what's happening here. That looks like a lead winged keel, which normally is a solid lead casting, no "voids" or spaces in it to be filled. With J-shaped conventional keel bolts that are permanently embedded.
I'm guessing that after the first grounding, the yard sistered those broken or damaged bolts, by drilling straight down from the cabin sole structure, and then drilling laterally across the keel, to add new bolts or other retainers at the bottom of the new keel bolts. That's the usual way to sister in new bolts in a conventional keel. But it also leaves vaguely fist-sized holes going laterally through the keel, or more than 1/2 way through it. Those holes have to be filled and SEALED to prevent the new bolts from corroding. The proper way to do that is by building up a clay dam on the side of each hole and literally pouring in new molten lead, but these days the odds are they used some kind of epoxy or filler instead. And if that's what they did, the seal may have been imperfect and the new bolts are now corroding.
In which case the really safe and proper solution would be to drill out the filler, completely, and replace the sistered keel bolts. If done one at a time, I think that could be safely done without dropping the keel.
You'd want to get a hands-on opinion from a professional surveyor (although you could certainly dig a little with an ice pick to see if those weep areas are in filler, rather than lead) and then of course, start looking for a better yard to do the replacements--unless you have the time and incentive to DIY on that.
If the yard work that was originally done is failing, that might also be good reason to have the work they did inside the hull rechecked. Just to be on the safe side.