ABYC E2, the potential range, for full protection, of a fiberglass boat is?

The potential range for full protection of a fiberglass boat, as outlined in ABYC E2 standards, is identified as -550 mV to -1100 mV. This range is significant because it defines the electrical potential at which the boat's metallic components can achieve optimal cathodic protection.

Fiberglass boats typically have metal components that can corrode if not adequately protected from electrochemical reactions with the surrounding water. The specified potential range means that when the metal components reach a potential within this range, they are sufficiently polarized to prevent corrosion. This polarization is crucial because it indicates that the cathodic protection system, such as zinc anodes or other protective measures, is functioning effectively.

Maintaining a potential consistently within this range helps ensure that the metals do not lose electrons (an oxidation reaction) that leads to corrosion. This aspect is vital for the longevity and integrity of the boat's metal fittings and components, making it crucial for boat owners and marine professionals to monitor and maintain their systems to stay within this recommended potential range.