COMPLETE CAP ANODE

Function and technical context

The full cap anode is a cathodic protection component designed to safeguard metal parts of the shaft and propeller against galvanic corrosion caused by prolonged immersion in salt, brackish or fresh water. It acts as a sacrificial metal, degrading in a controlled manner to preserve higher cost structural components such as the propeller shaft, horn and hub. Its placement in the area of ​​the propeller cap guarantees direct protective coverage over the most exposed end of the propulsion line. Without this element, electrolytic corrosion would advance rapidly on the submerged metal surfaces, compromising both the mechanical integrity of the propulsion assembly and the safety of the vessel.

When to replace this part?

The most obvious sign that the cap anode has reached the end of its useful life is a reduction in mass by more than 50%, at which point it no longer offers sufficient protection; Irregular deformation, fragmentation or a whitish coloration characteristic of consumed zinc can also be seen. It is recommended to inspect and replace the anodes at least once per boating season, or more frequently in areas with high water conductivity or when the boat remains at anchor for long periods. Replacing the anode preventively, before it disappears completely, is the most economical measure to avoid corrosion damage to the shaft, propeller and other transmission elements.

Compatibility