How Sacrificial Anodes Protect Your Boat From Corrosion
How Sacrificial Anodes Protect Your Boat From Corrosion When you submerge different metals in water—especially highly conductive salt water—you inadvertently create a giant, natural battery. This environment triggers an electrochemical process known as galvanic corrosion, where electrical currents flow between the metal components of your vessel. Without protection, this process will quietly eat away at your expensive stainless steel propellers, aluminum outdrives, and bronze through-hull fittings. Fortunately, a simple and highly effective defense exists: boat anodes . By intentionally introducing a highly active metal into the equation, you can safeguard your critical mechanical systems from costly underwater damage. What Are Anodes on a Boat? To understand how do anodes work on a boat , you have to look at the chemistry of the metals. Every metal has a specific electrical potential. When two different metals are physically or chemically connected while submerged in water, the w...