Anode Calculator

Find the Right Anode for Your Vessel

Use our free Anode Calculator to receive a recommended anode solution based on your vessel configuration. It's quick, easy to use, and built using the MPS Anode Selection Guide.

Anode Selection Calculator

Select your vessel construction and underwater drive material to find the recommended anode type and protective voltage range for salt & brackish water.

Recommended potential voltage —
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Important — Coating Protection Limit Fibreglass vessels with Shaft or IPS drives are recommended to achieve cathodic protection no greater than -750mV for coating longevity and best efficiencies. Exceeding this level risks paint blistering and premature coating failure.
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Use Caution — Compatibility Check Required One or more anode types above are rated Use Caution for this combination. These may cause over-protection or interact with other anodes already installed on the vessel. Ensure all anodes connected directly or indirectly are compatible. If in doubt, consult a corrosion specialist before installing.
✦ Trim Tabs & Swim Platform Recommendation
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This recommendation is only applicable on fibreglass & wooden vessels.
** Multiple Anode types must be electrically isolated from different anode compositions **
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Also recommended for shore power use Your vessel may also benefit from an MPS Electrolysis Blocker, designed to help reduce the risk of electrically induced corrosion when connected to shore power in marina environments.

Almost there — get your results

Enter your details below to view your personalised anode recommendation. We'll also email you a copy for easy reference.

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This calculator is a general guide only, based on the MPS Anode Selection Guide for salt & brackish water applications. When making changes to a vessel's cathodic protection system, seek professional advice. Signs of corrosion may not be related to anodes installed and could indicate electrically induced corrosion or other corrosion types not prevented by sacrificial anodes. When in warranty, always use OEM or manufacturer specified anodes.