What is often a consequence of poor cathodic protection?

The consequence of poor cathodic protection is most notably an increased risk of significant metal degradation. Cathodic protection is a technique used to control corrosion of a metal surface by making it the cathode of an electrochemical cell. When cathodic protection is inadequate, the protective current that typically mitigates corrosion is insufficient or absent, allowing corrosion processes to proceed unchecked.

This can lead to significant deterioration of metal structures, including those on boats and ships that are exposed to harsh marine environments. Metal degradation can manifest as pitting, general corrosion, or even structural failure if left unaddressed.

In contrast, improved metal conductivity, reduced levels of biological fouling, and enhanced electrical performance are not direct results of poor cathodic protection. These aspects are typically unrelated or can even be positively influenced by proper cathodic protection measures, as the intention is to maintain the integrity of the metal and extend its operational lifespan. Therefore, the main focus should be on the detrimental effects of inadequate cathodic protection leading to increased metal degradation.