About Anodes:
Sacrificial anodes are necessary to redirect galvanic corrosion from the boat’s exposed metal in contact with seawater to the more active installed anodes. The sacrificial metal, usually zinc or aluminum in our waters, donate their material instead of metals from the vessel, and connections must be immaculate to ensure a good electrical connection. The lifetime of anodes on running gear in local waters averages 6 months, but is also dependent on many factors including temperature, salinity, other systems around the boat, as well as the amount of exposed metal.
We can estimate the rate of anode decay after initial contact, and suggest an appropriate schedule for each vessel. Generally in our local saltwater environment of Puget Sound, a 6 month interval is common, and an extended interval up to a year for freshwater. Check our service packages for a schedule that works for you.