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post #22 of Old 10-26-2012
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Re: Advise on Weight & Type of Anchor for Islander 37

highfly, be very careful with the rudder. Once a rudder starts to fail, it fails in very clever ways, sometimes years down the line. If there is any penetration of the skin, any slight hairline crack, any failure of the seal where the rudderpost enters the skin, then water gets it, worked by the pressure from thermal cycling. Once the core gets wet it can take an incredible long time, months in hot dry air, and still not dry out. Then the problem is that the stainless rudder post, usually welded to a flat iron armature in the rudder, starts to corrode. Not simple rust, but the anoxic crevice corrossion that damp stainless suffers from, which is pretty much invisible until the day it suddenly fails.

You want to make Real Damn Sure that rudder is dry, and if necessary, rebuilt. Rebuilding them is not cheap, and there aren't many places who'll even touch the job. OTOH if you'll always be someplace where the loss of a rudder and a tow isn't a problem...there's less to worry about. You'll find other threads about rudders, failure, damage, if you want to pursue that someplace, rather than go OT here.
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