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Zinc Anodes

Mobile Zinc Anode Inspection & Replacement Service

Protect your vessel’s important metal components from galvanic corrosion with our Mobile Zinc Anodes Replacement and Inspection service.

When Should I Replace My Boat's Zinc's?

We Replace "Most" Zinc Anodes at 40% Life Remaining

worn down zinc anode on a boat
worn down boat shaft zinc anode

FAQ's About Zinc Anodes

Explore Answers to Your Questions

What are zinc anodes used for?

Zinc anodes play a crucial role in safeguarding your boat’s metallic components, such as shafts, props, and rudders. Known as sacrificial anodes, they are strategically installed and connected to the metal parts that require protection from electrolysis-induced corrosion.

What is the best anode for saltwater?

For saltwater environments, zinc anodes are the most effective choice.

Do you need zinc anodes in freshwater?

In freshwater, zinc anodes are not the most effective option. Instead, magnesium anodes are recommended for freshwater environments. Magnesium anodes provide superior protection against corrosion in freshwater, where zinc anodes may not perform as well.

How long does a zinc anode last?

The lifespan of a zinc anode can vary based on several factors, including the water conditions, the frequency of use, and the specific location of the anode on your boat. Typically, a zinc anode lasts anywhere from six months to a year.

Top 5 Reasons Why Zinc Anodes are Essential for Your Boat's Maintenance

Protecting Beyond Your Boat's Surface

Protection Against Electrolysis-Caused Corrosion

Zinc anodes are the protection you need for your boat’s metallic parts (shafts, props, rudders, etc.). Referred to as sacrificial anodes, these anodes are placed over and connected to the metallic parts of your boat that need protection from electrolysis-caused corrosion.

Preservation of Vital Boat Parts

If no zincs are present or they are drastically worn down, then they are left exposed to electrolysis which can weaken the propellers, shafts, struts, rudders and any other metal parts that are underwater causing cracks and breakage.

Enhanced Voltage Conduction

The need for zinc anodes stems from the fact that zinc has a higher voltage conduction than these other metals. As such, whenever zinc is connected to other voltage conductors (that make the different parts of your boat), current flows more through zinc than it does the other parts; limiting electrolysis to zinc alone.

Customized Maintenance Schedule

The wear rate of zinc anodes can vary based on the boat and its usage. Our professional divers can monitor and replace these anodes, usually every 4 to 6 months or at 40% wear, providing a customized maintenance plan that suits your boat’s specific needs.

Cost-Effective Long-Term Care

Regular replacement of zinc anodes is a cost-effective strategy compared to the potential expense of repairing or replacing corroded boat parts. It’s an investment in the longevity and safety of your vessel, ensuring that it remains seaworthy and reliable.

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