USCG Merchant Mariner Credential (MMC) Licensing Exam

What is the purpose of zinc anodes (sacrificial anodes) on a vessel's underwater hardware?

To protect metal fittings from galvanic corrosion by being sacrificially corroded instead To add weight for ballast and improve vessel stability To reduce drag by creating a smooth surface on the hull To conduct static electricity away from electronic equipment

Correct Answer:

To protect metal fittings from galvanic corrosion by being sacrificially corroded instead

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