RIVA ANODE 200x60x30

Function and technical context

Sacrificial anodes are fundamental elements in the cathodic protection of any vessel, acting as an electrochemical barrier that preserves submerged metal parts—propellers, shafts, engine tails and metal hulls—against galvanic corrosion. This 200x60x30 mm Riva anode works in the cathodic protection system, being placed on surfaces exposed to sea or brackish water where the difference in electrical potential between different metals would generate accelerated corrosion without its presence. Being manufactured with a high-purity zinc or aluminum alloy, it oxidizes and consumes in a controlled manner instead of the noble components of the engine or boat, thus avoiding costly structural damage to parts such as drive shafts, engine mounts or the tail itself. Its correct installation and periodic replacement is the most cost-effective preventive maintenance measure in nautical, especially in salt or contaminated water environments.

When to replace this part?

The most obvious symptom that an anode has exhausted its useful life is the visible reduction in its mass: when it has lost approximately 50% of its initial volume, it must be replaced immediately, since its protective capacity is compromised. The recommended inspection and replacement is at least once per nautical season, or even more frequently in water areas with high salinity or high galvanic current. Replacing the anode before it is completely consumed is the only guarantee that the metallic elements of the boat are protected at all times; Waiting for it to disappear completely can lead to irreversible corrosion of high-cost parts such as the tail shaft or the propeller.

Compatibility table