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← TechnologyWhich risk increases when a ship's propeller operates at a high slip ratio in shallow water?
A)Propeller cavitation induced vibration✓
B)Rudder stall causing loss of control
C)Hull corrosion from accelerated electrolysis
D)Engine overheating due to increased load
💡 Explanation
When propeller slip ratio is high, decreased pressure around the propeller blades creates cavitation because water vaporizes in low-pressure zones, forming bubbles whose collapse causes noise and vibration. Therefore propeller cavitation induced vibration becomes likely, rather than control loss, corrosion, or overheating, which stem from different mechanisms.
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