Galvanic Corrosion and Protection
Protect Your Boat or Metal Structure from Galvanic Corrosion
Measure, monitor, and prevent corrosion with professional‑grade testing equipment trusted by marine engineers and surveyors. Reduce damage, extend lifespan, and ensure your sacrificial anodes are working.
What is Galvanic Corrosion?
Galvanic corrosion occurs when two different metals are connected in water, causing one metal to corrode faster. It’s a common issue for boats, hulls, and underwater components.
Why it happens
When metals are electrically connected underwater, one becomes the “sacrificial” metal and corrodes more quickly.
Why it matters
Unchecked corrosion weakens hulls, damages components, and increases maintenance costs.
How it’s prevented
Sacrificial anodes protect your metal components — but only if they’re functioning correctly.
Why Monitoring Matters
Check Anode Performance
Ensure your sacrificial anodes are actually protecting your hull and underwater components.
Detect Stray DC Currents
Identify electrical issues at moorings that accelerate corrosion.
Measure Water Corrosivity
Understand whether your mooring environment is contributing to corrosion.
Hull Potential Testing
EDT supplies:
- Cathodic Protection Reference Electrodes
- Boat Meter Kits
- Multi‑meters and cables
Cathodic Disbondement Testing
EDT provides:
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Calomel reference electrodes
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Simple disbondment test setups
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Rapid‑delivery testing equipment
REDOX & Water Corrosivity Testing
REDOX testing helps you:
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Measure how corrosive your mooring water is
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Identify acidic or oxidising conditions
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Detect contamination or chemical imbalance
Use these tools to:
Confirm anodes are protecting your hull; Detect stray DC at crowded moorings and identify when anodes need replacing.
Common Corrosion Problems We Help You Solve
Stray Current Corrosion
Crowded moorings and shore power connections can cause stray DC — accelerating corrosion dramatically. Your hull potential readings will reveal this.
Cathodic Over‑Protection
Too many or oversized anodes can:
- Damage coatings
- Embrittle steel
- Increase barnacle growth
- Harm wooden hull fibres
EDT tools help you maintain the correct protection level.
Why Choose EDT?
- 30+ years supplying corrosion testing equipment
- Trusted by marine engineers, surveyors, and manufacturers
- All products stocked for next‑day delivery
- Clear, engineer‑friendly documentation
- UK‑based technical support
- Rapid delivery across all corrosion product ranges
Talk to an EDT Corrosion Expert
Corrosion Knowledge Hub
Visit the Corrosion Knowledge Hub for:
- Technical articles
- How‑to guides
- Troubleshooting steps
- Product selection help
If you can’t find what you need, email us at [email protected].
Protect your vessel. Prevent corrosion. Save money.
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