ANODO COLLAR GORI 2P SAILDRIVE Ø13" (AL)

Function and technical context

The GORI saildrive collar anode with two blades with a diameter of 13 inches in aluminum alloy is part of the cathodic protection system of the boat's external transmission. Its function is to act as a sacrificial electrode, oxidizing in a controlled manner to protect the metal parts of the saildrive - casing, shaft and propeller - against galvanic corrosion produced by permanent immersion in salt or brackish water. The collar design allows for a precise and secure fit around the shaft of the GORI saildrive, ensuring continuous electrical contact with the transmission. Without this active anode, galvanic corrosion directly attacks the structural components of the saildrive, potentially causing irreversible damage to the shaft, casing and sealing seals, with the consequent risk of water entering the interior of the hull.

When to replace this part?

Sacrificial anodes should be inspected at least at the beginning and end of each sailing season, and replaced when they have lost approximately 50% of their mass, have a very irregular surface, or show areas of excessive wear that leave the base metal of the saildrive exposed. In waters with high electrical conductivity or in marinas with eddy currents, consumption can be significantly faster, so it is recommended to check the condition of the anode at each beaching or every 6 months at most. Preventatively replacing the anode before it is completely consumed is the most economical way to avoid costly saildrive repairs or premature propeller shaft replacement.