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Re: Scanmar 33 keel.
I have an 1978 S&S 34. Bought about two years ago. When purchased had boat hauled and surveyed. Survey found a keel crack similar to what you have. I have about 10, 3/4 inch SS bolts holding the keel. The bolts are offset from center line about 5 inches (This is much stronger than the bolts in a line straight down center line). The bolts from survey were found fine (surveyor used the sound test- while not perfect, a good indicator in the hands of a skilled surveyor. Survey suggested I grind out the crack and reglass, Suveryor was not concerned about cracks as his experience was it was a non-structural flexing crack. Experience glass shop said they had done similar repairs on other boats. Note the boat had just finished a circumnavigation. I had repair done and after two years of heavy sailing no more cracks.
I would have a surveyor look at you bolts and keel. If you bolts are offset from center line and are in good condition from just visual and you bilge is not leaking, and when you pull the boat you do not have many days of water leaking from the crack, I would just glass it over. Before glassing over it I ground out and flushed the crack with freshwater and blew dry with compressed air.
I have looked further into this since my repair and found you could create a lot more problems by pulling the keel, or at the minimum, spend a lot of money not really solving anything. I dive my boat regularly and keep an eye on it, so far so good.
FYI, my keel is 5,000 lbs solid lead with the keel bolts attched by nuts in "windows" in the keel. The solid lead bolts direct to the solid glass boat hull.
Have you had a hard grounding since last inspection?
Last edited by casey1999; 03-26-2012 at 06:26 PM.