Which navigational uncertainty increased if an 18th-century ship's chronometer experienced a sudden rate change during a long voyage?

💡 Explanation

When a chronometer's rate changes unexpectedly, accumulated time error grows quadratically because incremental errors build up along the journey, directly affecting longitude calculations which depend on precise timekeeping. Therefore estimated longitude error increases, rather than angle ambiguity, declination issues or speed, which are linked to different aspects of navigation.

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