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← HistoryWhich error increases significantly when using a historical sextant on a pitching ship in high seas?
A)Side error from prism misalignment
B)Index error from horizon discrepancy
C)Dip short from reduced eye height
D)Rolling error from imprecise timing✓
💡 Explanation
When using a sextant on a pitching ship, the rapid changes in the observer's vertical angle introduces rolling error, as the instrument's orientation changes during the measurement. Therefore rolling error increases, rather than side, index, or dip errors, which are more related to instrument calibration or observer positioning.
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