Originally Posted by CBinRI
I have a heard people express a strong preference for lead keels over iron keels. What are the differences and is it a big deal if you encapsulate it? I'm talking about a big fin keel on a 40 + foot boat.
Am looking at a Jeaunneau 42 DS with cast iron keel and bronze bolts that are electrically insulated. Sail Net Artical a good one......I attached just part of Don Casey's fine explanation.
Bronze Keel Bolts Bronze cannot be used in a cast-iron keel (unless the bolts are electrically insulated from the iron) but it is a superior choice for attaching a lead keel. Unlike stainless, bronze likes stagnant seawater. A good marine bronze can lose less than one thousandth of an inch to corrosion in 40 years of immersion. Bronze keel bolts generally succumb to overtightening rather than to corrosion. Under normal circumstances they are good for the life of the boat.