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← HistoryWhich risk increased when 18th-century navigators relied heavily on astronomical observations using sextants, under persistently cloudy night sky conditions?
A)Increased accumulated dead reckoning error✓
B)Sextant mirror desilvering accelerated
C)Chronometer error curve nonlinearity emerged
D)Increased risk of stores spoilage
💡 Explanation
Increased cloud cover obstructs celestial sightings, therefore navigators heavily relied on dead reckoning which is a process of estimating position based on prior course and speed, rather than celestial observations. Dead reckoning relies on previous estimated location, leading to accumulated error.
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