Zinc Anode Replacement
Protect your hull from galvanic corrosion. Replaced right, every time.
What's Included
- ✓Inspect existing anodes for depletion
- ✓Remove and replace hull zincs, shaft zincs, and trim tab anodes
- ✓Check bonding system integrity
- ✓Document with photos
- ✓Note next service interval
Why It Matters
Galvanic corrosion is invisible until it's catastrophic. When dissimilar metals come into contact in saltwater, an electrochemical reaction begins eating your hull from the inside out. Zinc anodes are sacrificial — they corrode instead of your boat's steel, aluminum, and bronze.
San Diego's mixed-metal marina environments accelerate depletion. A $40 zinc saves a $4,000 propeller shaft. Ignoring anode replacement means watching your engine seawater through expand and your propeller lose integrity one invisible grain at a time.
How Mark Does It
- 1.
Visual inspection dive-free from dock/swim platform
No need to haul out. A snorkel check tells us exactly what we're replacing.
- 2.
Assess depletion percentage
If an anode is more than 50% consumed, it's being replaced. Not 49%, not 51% — our rule is clear.
- 3.
Replace all depleted anodes
Hull zincs, shaft zincs, trim tab anodes — all get fresh hardware. We don't do partial jobs.
- 4.
Check bonding wire continuity
Anodes don't protect if the bonding system is broken. We test every connection.
- 5.
Photo documentation
Before, during, after. You see exactly what was replaced and why.
- 6.
Service record and next interval
We note when to check again — usually 12-18 months depending on your marina water quality.
Transparent Pricing
$95/hr
Plus anode hardware (typically $80–$200 depending on zinc size)
No shop markup. Flat labor rate, every time.
Related Services
Ready to Protect Your Hull?
Contact us for a free anode inspection or to schedule your replacement.
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