Anode Basics: Dos and Don’ts

Choosing the right sacrificial anodes is critical to protect your boat from galvanic corrosion. Read on to learn about common mistakes and how to do the job properly.

3
Two Sea Shield anodes installed fore and aft of the cutlass bearing. (Photo/ Marc Robic)
Two Sea Shield anodes installed fore and aft of the cutlass bearing. (Photo/ Marc Robic)

No matter what type of boat you have, if she’s kept in the water all season, maintaining your sacrificial anodes must be part of your regular to-do list. This seemingly innocent looking part—made of zinc, aluminium or magnesium and available in various shapes, sizes and installation options—is critical to your boat’s well being.

To continue reading this article or issue you must be a paid subscriber.

Subscribe to Practical Sailor

Get full access to Practical Sailor - over 4,000 articles - for just $34.
Subscribe today and save 42% off the annual rate.
Already Subscribed?
| Forgot your password? | Activate Web Access
Marc Robic
Marc caught his love of sailing and all things water from his father from a very young age. He has owned many sailboats in his 40+ years of sailing. An avid do-it-yourselfer and handyman, he builds, modifies, improves and executes all his own repairs. He also enjoys testing, documenting & sharing products and how-to methods with other sailors and boaters. Posting many how to videos on his YouTube channel and Facebook page. He is a member of the Canadian Power and Sail Squadron. Currently, he sails his Catalina 270, Aquaholic 3, out of the Ile-Perrot Yacht Club in Montreal, where Marc spent 16 years as Harbour Master. He is also a regular bareboat yacht charterer, having sailed most of the Caribbean islands. In the winter months, Marc regularly hand builds exact scale models of friends’ boats to give them away in the spring.

3 COMMENTS

  1. Hello David you are absolutely correct, about not installing anodes to close to Cutlass bearing. The ones in the photo are as close as one should go, leaving enough room to allow water to access the bearing. Also, installing the anode close to the bearing can prevent looking the shaft should it break away from it’s transmission flange.