Ask the Experts – Sacrificial Anodes

Ask the Experts Macleod

 

When metals are immersed in water and in close proximity to each other they produce an electrical voltage. When two dissimilar metals are in contact they form a galvanic cell, just like a battery.

If you want to protect both metals you need to introduce a third metal that is more active than the first two. The most active metal (zinc, aluminum or magnesium) becomes the anode to the others and sacrifices itself by corroding to protect the cathode – i.e. it sacrifices itself for the good of the other metals.

In this edition of Ask the Experts, we will explore what a sacrificial anode is, what it does and when to replace it.

 http://www.informedboater.com/ask-the-expert/

View the Sacrificial Anodes video here.
Sacrificial Anodes
Related Articles:

* Ask the Experts Home Page

* Ask the Experts: Keeping Diesel Fuel Clean Part I – Biocide

* Ask the Experts: Keeping Diesel Fuel Clean Part II – Filters

* Ask the Experts: Keeping Diesel Fuel Clean Part III – Water Separation Filters

* Ask the Experts: Solar Panels – Part I – Power Considerations

* Ask the Experts: Solar Panels – Part II – Solar Technology

* Ask the Experts: Solar Panels – Part III – Installation

* Ask the Experts: Battery Performance and Longevity

* Ask the Experts: Ablative Bottom Paint

For more Ask the Experts videos as well as Boat Reviews and Boating Lifestyle videos subscribe to Canadian Yachting’s YouTube channel here!

 

Related Articles


Sylvan G3 CLZ DC: Luxury For Everyone

Sylvan’s brilliant G3 CLZ DC brings an entirely new level of performance, comfort and versatility to Canadian boaters.

By Craig Ritchie

While Canadians may have been slower to warm to pontoon boats than our southern neighbours, that’s definitely changed as we see more of them gracing our waters every year. The latest data shows pontoon boats now represent around 30% of all new boats sold in Canada and it’s easy to understand why – with their interior space and tremendous versatility, pontoons are near-perfect family runabouts.

Read More


Destinations

Cruising Georgian Bay’s 30,000 Islands: Canada’s Freshwater Paradise for Boaters

By Elizabeth Wilson, “Georgian Bay Beauties” (www.GeorgianBayBeauties.org)

The Plan

It’s a beautiful morning as we perform our pre-departure checklist, fire up the engines and prepare to release our lines. And if the long-range forecast of very low winds coupled with plenty of sunshine holds, that’s exactly what we need for the areas we plan to explore on this trip! 

We are departing Midland for a week of visiting some of the islands and anchorages within Georgian Bay’s “30,000 Islands” – specifically those along the western edge. These are the less protected islands which face toward wide-open Georgian Bay, where boaters often have to depart the small craft route and work a little harder at setting the hook but are then rewarded with magnificent western views, stunning sunsets, and so much to explore! 

Read More