After over a year sitting in brachish water, I pulled the boat to clean the bottom. I noticed the only places that needed cleaning were the waterline, and the bottom of the keel where the anti-fouling paint has worn off from "beaching" the boat many times. While being layed up for 4 weeks and not able to get to the boat, the new rudder dropped and you can see what only a month's growth looks like. McGyver painted the bottom maybe 10 years ago with a hard anti-fouling. It has lasted all these years and has performed admirable. The boat has been in brackish water for over a year with very little growth. My other boats need cleaning every 4 months. Mac, if you're reading this, I hope you can remember what you used.
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I am pretty sure yours was Fiberglass Bottomkote by Azko Noble Company product line named Interlux.
Should be a color Black in that line.
I think now it may be called or reformulated into Fiberglass Bottomkote NT.
Thinking about things I doubt I would have used a Petit product, and I would not have suggested Micron CSC which is a ablative, as trailering it would rub it off or shed itself too easily....
Very happy to see a job hold up, getting ready to do mine sometime as she is finally ready for a refresh!
Mac
Thanks Mac!