Which navigational risk increased when using chronometers lacking proper temperature compensation when charting arctic waters?

💡 Explanation

When chronometers undergo temperature variations, thermal expansion affects the balance spring, causing timekeeping errors because these errors accumulate linearly with time leading to increased uncertainty in longitude calculations. Therefore, longitudinal position errors were greatly increased rather than latitudinal errors which were determined by celestial positioning, unusable data because of other navigation tools, or compass deviation because of magnetic field effects.

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