Vessels that operate across the globe in waters of varying levels of salinity and temperature are susceptible to corrosion damage. For example, localized pitting can occur on steel or aluminium hull plates and result in the complete penetration of the hull below the waterline. This can render a vessel unseaworthy, meaning it could require drydocking for unscheduled and costly maintenance. Cathodic protection (CP) is a proven, cost-effective and efficient corrosion mitigation solution and is central to almost every hull design.