Which navigational risk increased due to thermal expansion within 18th-century ship chronometers during extended tropical voyages?

💡 Explanation

When subjected to extended tropical heat, thermal expansion within early chronometers caused dimensional changes in components because metal expands with temperature, leading to altered oscillation rates and cumulative timekeeping errors. Therefore, rate errors increased rather than spring failure, angle inaccuracy or compensation disruption, which arise from different mechanical stresses or instrument malfunctions.

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