Join Date: Nov 2006
Location: Nanaimo, B.C., Canada
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Rep Power: 11
Antifouling for Saildrive
I have a Volvo saildrive. I was told by the dealer and several maintenance people not to use a copper based antifouling paint on the aluminum saildrive. Do not use regular bottom antifouling. At launching in 2004, the worker applying the paint used a tin based product on my saildrive. This worked very well. As previously stated, tin based products are illegal, so I obviously had to use something else at haulout last year. First I had to prime the drive with an "undercoat" to avoid incompatibilities, and then I used a Trilux paint designed for underwater metals (aluminum in particular). In my case, I used an aerosol spray paint. One can was plenty for several coats. I also painted my aluminum prop with the same paint.
Be very careful with this, as you could create a very expensive problem for yourself if you inadvertently cause corrosion on your aluminum saildrive by using a non compatible paint.
Hope this helps,
Point Roberts, Wash. Marina
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