ANODE SOLE/3 36mm.

Function and technical context

Sacrificial anodes like this 36 mm SOLE/3 are part of the boat's cathodic protection system, acting as a consumable element that preferably oxidizes to preserve the metal parts of the engine and hull against galvanic corrosion. This type of component works in direct contact with water—whether salty, brackish or fresh—and its presence is essential to protect critical surfaces such as shafts, propellers, tail legs and engine casings of Sole Marine engines. Without adequate cathodic protection, galvanic corrosion silently and irreversibly attacks the most expensive components of the propulsion system, potentially rendering them unusable in a single sailing season.

When to replace this part?

The clearest symptom that a sacrificial anode needs replacement is the loss of more than 50% of its mass: when the anode appears very reduced, cracked or completely consumed, it has stopped protecting the metal components of the assembly. It is recommended to inspect and replace the anodes at least once a season—or every time the boat leaves the water to be docked—since a depleted anode immediately exposes the elements it protects to accelerated corrosion. Changing the anode preventively at the beginning of each season is the most economical and effective maintenance measure to avoid serious breakdowns in the propulsion components.