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Which risk increased during long 18th-century sea voyages due to copper sheathing galvanic corrosion?

A)Weakened hull from zinc depletion
B)Rudder failure from hydrogen embrittlement
C)Increased barnacle growth from ion release
D)Mast collapse from accelerated rusting

💡 Explanation

When copper sheathing reacted galvanically with iron fastenings, preferential oxidation of the zinc in the iron occurred because zinc has a lower reduction potential, leading to weakened iron. Therefore weakened hull integrity resulted, rather than rudder failure, barnacle growth, or mast collapse, which involve different corrosion and loading mechanisms.

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