Corrosion Is Almost Never Random on a Cruising Boat

People often treat corrosion as if it were weather, annoying but inevitable. In reality, the recurring kind usually has a structure, moisture path, material mismatch, stray current issue, or neglected fitting that keeps feeding it.

If the same locker or terminal area keeps degrading, document it before cleaning it. Where did it start. What sits above it. What electrical or bonding path shares that space. What changed recently.

The reason this matters is simple, cosmetic cleaning without root-cause work gives a false sense of progress. You get a neater locker and the same problem a month later.

Corrosion control gets much easier when you stop treating the symptom as the event. The event is the repeated exposure or electrical condition that made the damage inevitable.