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← HistoryWhich operational risk grows when a galleon's hull is copper-sheathed in saltwater?
A)Increased osmotic pressure on the hull
B)Accelerated galvanic corrosion of rudder fittings✓
C)Elevated anaerobic bacteria colonization
D)Augmented hydrodynamic drag at high speed
💡 Explanation
Galvanic corrosion increases because copper is more noble than the iron rudder components, resulting in the copper acting as a cathode causing increased iron oxidation. Therefore, the fittings corrode, rather than the hull itself suffering degradation or increased biofouling.
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