What is done to propellers exposed to salt spray?

What is done to propellers exposed to salt spray?

• A. they are flushed with fresh water
• B. they are coated with oil
• C. they are painted blue
• D. they are left as-is

Answer: (A)

Salt spray leaves chloride deposits on metal surfaces, which accelerate corrosion on propeller blades. Flushing with fresh water washes away these salt deposits and helps prevent corrosion, making it the appropriate maintenance step for components exposed to seawater. Coating with oil doesn’t remove the salt and can trap moisture, potentially worsening corrosion. Painting is cosmetic and does not address the corrosive effect of salt spray, and leaving the propellers as-is allows ongoing salt-induced deterioration.

Salt spray leaves chloride deposits on metal surfaces, which accelerate corrosion on propeller blades. Flushing with fresh water washes away these salt deposits and helps prevent corrosion, making it the appropriate maintenance step for components exposed to seawater. Coating with oil doesn’t remove the salt and can trap moisture, potentially worsening corrosion. Painting is cosmetic and does not address the corrosive effect of salt spray, and leaving the propellers as-is allows ongoing salt-induced deterioration.