The effect of foul-release-coated propellers on the cathodic protection current demand was investigated in a sea trial involving a Royal Canadian Navy training vessel. The decrease in current demand was significant with a 76% reduction while underway, and up to 40% reduction while alongside. The measured current demand was consistent with that modeled using a boundary element technique. As expected, the largest contributors to ship current demand were the area of exposed hull and propellers, and ship speed.

Subject
Electric current, Propellers, Coatings, Impressed current cathodic protection, Modeling, Cathodic protection, Corrosion currents, Hull, Anodic current, Marine vessels, Risk reduction, Protection potential, Anodes
Keywords:
cathodic protection, corrosion, current demand, foul release, propeller
© 2012 NACE International
2012
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