 After coping with problems of galvanic deterioration of metal hull fasteners, sacrificial anodes were developed, which were designed to corrode, instead of the hull fasteners.The practice became widespread on naval vessels, starting in the late18th century, and on merchant vessels, starting in the early 19th century, until the advent of iron and steel hulls.Iron-hulled sailing ships, often referred to as "windjammers" or "tall ships", represented the final evolution of sailing ships at the end of the Age of Sail.