Tartan 27' owner
Join Date: Jan 2008
Thanked 120 Times in 112 Posts
Rep Power: 9
I thought that depriving SS of air was not a good idea over the long term.
We replaced the aft chain plate on my boat that had stainless bolts encased in fiberglass for 30 odd years. The bolts were unrecognizable as stainless steel and were rusted and pitted.
I have seen the keel bolts on Bene505's boat. The heads of the bolts stick up from the floor of the bilge and there is some slight rusting here and there. The rusting appears to be cosmetic at this point.
I think that Sway means Naval Jelly or phosphoric acid when he says 'ospho' which will remove the rust from the bolts (hardware store, HD etc).
I am not sure whether painting or the use of grease on these bolts would be the best approach. Certainly, keeping the bilges dry would be a step in the right direction. Some solar powered vents might help remove moisture.
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
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