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What this video covers

Aluminum anodes protect aluminum sail drive legs because the anode alloy is more reactive than the leg itself.0:41 Yanmar and other non-Volvo Penta sail drives maintain a direct electrical connection to the engine, integrating the leg into the boat's overall galvanic protection system.Watch If the boat lacks adequate external galvanic protection, the sail drive leg may begin to corrode once its dedicated anode depletes.1:41 Anode effectiveness decreases as surface area diminishes; replacement is necessary once the anode is more than 50 percent consumed.2:14 Volvo Penta sail drives utilize a patented plastic gasket to electrically isolate the leg from the engine, a feature that requires careful maintenance to prevent accidental electrical bridging.1:27 When multiple anodes exist within the same bonded system, all must consist of the same material to prevent galvanic imbalance.3:23 Proper maintenance of these components prevents severe corrosion of the sail drive leg.

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