Features March 2009 Issue

Bottom Paint Tests 2009 Spring Update

Practical Sailor takes a look at boat antifouling paint performance after 6 months and 18 months in the water.

Over the years, Practical Sailor has tracked the evolution in marine antifouling paints. Shaped by government regulations, environmental concerns, and industry innovations, the shift started with tin-based paints in the 1980s. After tin-based paints came under fire for the harm they cause marine life, copper-based paints grew in popularity. Now, concerns about the impact of copper on the environment have led to the development of copper-alternative paints, such as zinc-biocide and water-based antifoulings. We continue to sort through the data to help you find the best bottom paint for your boat. This report offers an update to our panel tests after six months and 18 months in the water as well as the head-to-head tests under way on our test boat fleet. Some of the best performers (out of 72 paints tested) at six months were hard paints and specialty antifoulings such as Copper Shield 45 Hard made by Blue Water, VC Offshore by Interlux, Copper Guard by Pettit, and Sharkskin by Sea Hawk. The best ablative paints at six months included Copper Shield SCX 45 by Blue Water, EP-21 by Epaint, and Hydrocoat and Vivid Free by Pettit. The top long-term bottom paints—those appropriate for multi-season antifouling protection—included Interlux Micron 66, Pettit Trinidad SR, and Interlux Epoxycop. These extensive tests also included marine bottom paints from Awlgrip, Flexdel, and Microphase Coatings. The lineup also covered re-branded products from West Marine.

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