Late Summer I hung 7 test panels with 20 paints from a dock in the Mid-Chesapeake Bay (Deale, MD) as part of a Practical Sailor project. Prior projects have all been seawater. I also applied 50 of these paints to my Corsair F-24. Today I pulled them out for a quick look see. No cleaning, just a check-up.
We don't get much growth in the cold season.You can see it in the non-painted frames. Some are doing amazingly well (the white is actually still that white), and some not very different from untreated areas.
All of the paints are either copper-free or formulated to the new EPA/CA/WA copper leach rate, which most of the good multi-season paints already met (or the copper would not have lasted 3 years--kinda of obvious in retrospect.
They'll be hanging there for 3 years, with us checking on them about twice per year. We'll rotate positions. In the summer they will hang from floats to better control the depth (ice is a problem in the winter).
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