So tell me about your anodes… Those “Zincs” that you put on your boat every? year. Are they zinc? Is that what’s best? Much like this article explains, an anode made of zinc is probably not the best choice for your boat. I switched to aluminum two years ago after doing a bit of research, and I immediately regretted it. Yard workers, diesel engine guys, and anyone with an opinion on the topic said that zinc was the only way to go. So, I researched it.
Turns out aluminum is better, higher electric potential, higher overall capacity, and doesn’t suffer from the calcification layer that lowers it’s protection. My original anode fell off just prior to pulling and painting. I installed a new one late last summer, so I’m hoping to get some good data over a year or two timeframe. Sadly I forgot to take a pic after I put it on, but it looks more or less like this.
