Well, it's been two years now using the copper-free SEAVOYAGE bottom paint by Sherwin-Williams. Much of it is now gone from the hull
. but due to regular monthly cleaning
by one of the most conscientious divers (Bruce of OMNI Precision Diving) in San Diego Bay, the bottom is in good, but needy, condition. I will be hauling out this summer to redo my bottom. My yacht club participates in a program to monitor
pollution levels and ensure best marine
practices by our divers. Our member
that is involved in the study, a retired biologist and active sailor, has revealed to me that the current
information regarding bottom paint now shows these copper-free alternatives to be of marginal value. This has been confirmed by Practical Sailor's 2015 test of bottom paints. In fact, their study shows ALL available bottom paints in the US (other than tributyltin) provide less than stellar performance. The best was rated POOR +.
So, fstbttms appears to be our most knowledgeable resource. What is your suggestion for a durable, long lasting copper paint available in California
? I will be having it applied to both my forty foot trimaran
, and a thirty-nine foot power catamaran
recently purchased by a friend. Both boats will be making extended voyages in the next couple years to warm waters.