Which navigational inaccuracy emerges when piloting a tall 18th-century ship in high latitudes with ice?

💡 Explanation

Sextant errors appear because atmospheric refraction close to the horizon causes an overestimation of the celestial body's altitude. This refraction is exacerbated by temperature gradients near ice, particularly during twilight. Therefore, accurate navigation fails, rather than chronometer errors, compass variations, or log errors.

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