Which structural weakness frequently arose with 18th-century 'treenail' fastened ship construction encountering tropical conditions?

💡 Explanation

When ships entered tropical climates, the warm, humid conditions promoted fungal growth within the treenails holding the timbers together, triggering decomposition. Therefore, treenail breakdown resulted, rather than fracture, material corrosion, or joint vulnerability, which depend on different material properties and loading scenarios.

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