Duralux Urethane-Alkyd Marine Enamel is a single-package topside enamel for use on primed steel and metal, wood, aluminum, or fiberglass. It is designed for commercial or pleasure boats, onshore and offshore oil rigs, bridges, tanks, and other structural objects. Duralux Marine Enamel is salt water resistant, withstands repeated washings, resists oil and gasoline, and holds up to the discoloration effects of harbor gases.