
Re: antifoul
No. Antifoul paint contains a cocktail of biocides in it. Most these days are based on copper but, back in the day, were based on tri-butyl tin (TBT) it was incredibly effective but also killed lots of other stuff and persists for a very long time. I have heard it said that you can follow the shipping lanes across the North Sea by following the areas bereft of life on the sea bed.
My bottom is truly copper bottomed. It uses powdered metallic copper in an epoxy substrate. The copper oxidises to cuprous oxide which is the active ingredient. This then further decays to cupric oxide which ablates off to expose another layer of copper and so on. it has lasted ten years now but probably needs a new application now.
Beer cos Friday but not too much as I am driving down to said boat tomorrow.