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Old 08-07-2006
BM1 BM1 is offline
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I did the Catalina fix with my C-27. All the bolts were rusty, so I clean them, and painted them. I put in 5 - 10'' lag bolts in the keel. I haven't had any problem in the 2 years since I did it, even in 20-25 Kts and 3-4 sea.
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Old 08-07-2006
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Covering the bolts in 5200, bad idea. It can be a flaming *itch to get the stuff off. It's expensive stuff. And, you don't need the strength, adhesion, etc. of it. Lanocote is mainly lanolin (sheep fat/oil) and that, or bees wax, or tar, any of those will be a perfectly good moisture barrier that is much easier to get off. (The tar being the hardest to clean out afterwards.) Cheaper and easier, because you really SHOULD remove the rusted nuts and replace them sooner rather than later. Losing a keel can make for a very long day.
The keel bolts--always, AFAIK--are embedded in the keel and cannot fall out. Removing one nut while you are in the water "should not" be a problem, if the keel is engineered and attached well enough so that doesn't loosen it up and start it leaking. Your guess on that.

Sistering in new keel bolts (applying them in between the existing ones) CAN work--if the attachment is strong enough. If they are just going into the hull with no stringers, etc. to support them and spread the load...maybe, maybe not. If it is an external lead keel, in theory, you can literally drop the keel, clean out the gap *perfectly*, and glue it back on with 5200. The stuff IS that good. If you do that and then sister the keel've got two fully redundant means of holding on the keel. I'd sleep easy on that kind of overkill.

Yard liability is sometimes just BS, sometimes a scared yard owner. It can be a real issue, i.e. if you scrape ten years of old paint off your bottom and it contaminates the soul because you didn't curtain off the boat and put drop clothes under it...The yard owner might have to do an "EPA remediation" involving a bulldozer and scraping off ten inches off the entire yard, plus pay a six-figure fine. These things HAVE happened. Or, some bozo uses a torch to loosen up a bolt and sets the yard on fire...and the bozo has no insurance, so the yard owner gets sued by fifty boat owners, each asking a hundred grand plus.
Bottom line is that you have to ask, yards that allow owners to do their own work are becoming harder to find. Party because too many bozos have been causing problems.
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