We both a boat in the Seattle area and when we hauled for the survey I changed the anodes while it was hanging in the slings. There was a chandlery right there that the anodes in stock. I figured that if the deal fell through the cost of the anodes wasn’t much. I use aluminum anodes in freshwater here. Magnesium are more trouble to find.
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.