Corrosion control guide

You Keep Finding Corrosion in the Same Lockers

Repeat corrosion is almost never random. If the same locker, terminal block, or equipment bay keeps degrading, the boat is pointing at a pattern that needs to be found and broken.

What is usually happening

Moisture paths keep re-wetting the same zone.
Dissimilar metals or poor protective treatment are accelerating damage.
Bonding or stray current issues may be turning normal exposure into a chronic problem.

First checks to run

Map where the corrosion appears first and what lives directly above or beside it.
Inspect drains, hose routing, deck leaks, and condensation sources.
Check nearby terminations, bonding conductors, and any DC return path that shares the space.

Things to document

Photo the damage before cleaning it.
Log whether the issue follows rain, washdown, engine operation, or shore power use.
Note any recent equipment additions or rewiring near the affected area.

When it is urgent

Bonding straps are failing, terminals are thinning, or ground paths are degrading.
You see active pitting on critical fittings or electrical hardware.
The affected equipment supports safety, steering, charging, or communications.

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