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Which outcome commonly occurred when 18th-century ships misapplied parallax correction during celestial navigation?

A)Systematic course deviation over time
B)Sextant mirror desilvering acceleration
C)Chronometer spring fatigue worsened
D)Inaccurate sounding depth calculations

💡 Explanation

Systematic course deviation occurs because the parallax effect, caused by viewing celestial objects from Earth's surface rather than its center, introduces angular errors when not properly accounted. Therefore, unchecked angular errors produce course errors, rather than equipment damage.

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