Join Date: Jan 2003
Location: Maine Coast
Thanked 213 Times in 162 Posts
Rep Power: 16
I too have a keel stepped mast but I created a mast sump or mast catch basin. My mast sump is separated from the rest of the bilge and I drain after a rain or fog. Yes I get water down my mast but usually not much more than a quart after a good rain. You are right that there is no way to seal off the mast but you can catch it if you're creative.
As for your AC you can use a condensate pump and discharge the condensate overboard instead of into the bilge.
If I'm not mistaken though I thought you were on the lakes. While crevice corrosion does occur in fresh water it is reportedly somewhat less aggressive.
Having been through a keel re-set and keel bolt replacement due to a leaking keel to hull joint that resulted in severe crevice corrosion I now take keeping my bilge dry a lot more seriously...
Even back in 1998 it ran me huge money and I did a large chunk of the labor myself...
Believe me, I bought my boat last spring, and it took me all summer to isolate every leak, whether fresh or salt water and put an end to them. I had a couple of annoying ones that took a while to find but I finally did.
-Maine Sail / CS-36T
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