Originally Posted by fstbttms
Anybody who has ever used a tin-based anti fouling paint
will tell you that it is orders of magnitude more effective at killing fouling organisms than a copper-based paint
. It doesn't take a rocket surgeon to extrapolate the answer to your frivolous question from that. This isn't a court of law so your "burden of proof" homily is pretty ridiculous. If you are looking for justification to use an illegal paint, I'm sure you'll find some whether or not we waste any more time and electrons trying to convince you otherwise.
Well I have to confess I do have a legal
background and my first thought on reading your post was:
"Objection, assuming facts not in evidence."
Since an order of magnitude is 10 and you claim tin based paints are "orders of magnitude more effective" by implication you are saying tin based paints are hundreds or thousands of times more effective than copper based paints. If I thought that was true I might consider using a tin based paint since my current
ablative bottom paint
will be two years old in May and I will be repainting it then. But I doubt even a tin based paint would last two hundred years, less yet two thousand years.
I also have a hard science background since I was involved in environmental law and even a freshman chemistry student would not try and extrapolate based on your claim.
But my real objection is your accusation that I am trying to justify using a tin based paint on my boat. I am a serious diver who spends lots of time in the water
close to my boat and would have real concerns using a tin based paint. I normally find a nice shallow sandbar every month or so and knock the growth off my boat. But before I do this I put on a hood
, full wet suit, booties, and full face mask. Even with the traditional ablative paint I use I worry about what I see when I do this. I am sure you have seen much worse since you have more experience than I do knocking growth of boats with a huge range of bottom paints.
My goal is not to justify the use of tin based paint. I am simply trying to find out if and/or how much worse it is than conventional bottom paints.