Features

April 2007 Issue

Corrosion Protection Coating Test

How to prevent rust on boats has been one of the sailor’s most enduring challenges. For this test of anti-corrosion sprays and coatings, anything that had “rust” and any reference to “marine” or “boats” or “salt spray” was fair game. Paint was out. Our saltwater test, which involved full immersion of mild steel coupons, was admittedly harsh, and quickly produced results. After three days, most of the steel coupons were significantly rusty. Only three saltwater test panels showed no corrosion—those coated with CorrosionPro Lube, CRC Heavy Duty, and LPS 3.

Wouldn’t it be nice if you could have a rust-proof boat? In search of our ideal anti-corrosion coating, we chose the products based largely on their advertised claims and also on how easy they were to find. Among the products we tested for corrosion prevention: West Marine CorrosionPro Lube, CRC Heavy Duty Corrosion Inhibitor, Corrosion Block, Boeshield T-9, WD-40, CorrosionX, Corrosion X HD, Shark Hide, LPS 1, LPS 2, LPS 3, and TC-11 all popped up during Internet searches. We left out products that made no specific claims for use in the marine environment.

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