USCG Merchant Mariner Credential (MMC) Licensing Exam

What does the term 'cavitation' mean in marine propulsion?

Formation and collapse of vapor bubbles on the propeller blades causing erosion and loss of thrust Vibration caused by propeller blade imbalance during high-speed operation Air entrainment in the fuel system causing engine performance loss Overheating of the propeller shaft bearing during extended operation

Correct Answer:

Formation and collapse of vapor bubbles on the propeller blades causing erosion and loss of thrust

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