Does anyone have information or views on antifoulings compatible with aluminium? Since tri butyl tin (TBT) was banned internationally we have used a US non-metallic product manufactured in Falmouth, Mass, by E Paints, with great success. This product SN-1, is used by the US Coast Guard on their aluminium craft and we have found it to have excellent antifouling properties in the Caribbean and the east coast of the USA and Canada (warm and cold waters).

One problem is that this product is not available outside the USA and, contemplating a move to European waters in 2013 we are already wondering what effective products are available in Europe?

Simon. How very interesting. I would be very interested to know how well it works in practice. Some years ago I had a slight involvement with, also an Australian system, for cleaning heat exchanger tubes using a combination of ultasonics and high pressure water jetting. The ultasonics certianly made the jetting process much more efficient.

I like your belt and braces approach but how will you evaluate the effect of the ultasonics?