Which increased risk accompanied adoption of copper sheathing below waterline on 18th-century warships?

💡 Explanation

When copper sheathing was used, galvanic corrosion arose because copper and iron have different electrochemical potentials, leading to an electrolytic cell where iron fasteners corrode preferentially. Therefore, increased corrosion results, rather than reduced strength, increased biofouling, or fire risk, which depend on other materials properties.

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