Will second Bill's comment. Two years ago a C&C 37 was in our boat yard for the winter with a keel that was not well attached to the keel stub. The keel nuts would not tighten but slipped on the bolt threads. Dropped the keel to discover the bolts had not been sealed at manufacture allowing bilge water in causing crevice corrosion to the point the threads were damaged. This allowed keel movement elongating the holes in the stub which allowed more leakage / corrosion. Solution was to ship the keel to foundry for repair and new bolts, repair stub holes, allow everything to thoroughly dry, reinstall with good sealer all around. Major job to say the least.
Dave's photos look like a similar problem - best of luck in repairing John and Maryann Legacy III 1982 C&C 34 Noank, CT From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Bill Bina - gmail via CnC-List Sent: Monday, September 26, 2016 11:15 AM To: cnc-list@cnc-list.com Cc: Bill Bina - gmail Subject: Re: Stus-List Freeze/thaw issues in lead keels Sealing keelbolts or filling the holes with anyting is more likely to accelerate crevice corrosion. Any attempts to protect keelbolts needs to center around keeping them bone dry. You sure do not want to seal in, or encapsulate any moisture! Bill Bina On 9/26/2016 11:09 AM, Ron Ricci via CnC-List wrote: Wow! My boat had this but nowhere near as pronounced. It shows itself as a pink "ooze" coming out of a couple of minor blisters below the keel-hull joint. I have been putting about 3 gallons of antifreeze in the bilge each winter to prevent any water that gets in the bilge from freezing, hence the pink color. Hopefully adding the antifreeze has prevented the problem from getting worse. I do intend to undo the keel bolt nuts, seal around the keel bolts with butyl rubber and torque the bolts. Anyone have any thoughts on this? Regards, Ron Ron Ricci S/V Patriot C&C 37+ Bristol, RI From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dave S via CnC-List Sent: Sunday, September 25, 2016 9:10 AM To: C&c Stus List Cc: Dave S Subject: Stus-List Freeze/thaw issues in lead keels Good morning all. Several weeks back there was a discussion surrounding issues with bulging keel castings in colder climates. Been meaning to post some photos I took awhile back, here they are: http://cncwindstar.blogspot.ca/ Dave 33-2 Windstar _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
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