Which consequence arose when historical celestial navigation encountered iron ship hulls?

💡 Explanation

Stray magnetism interfered with navigation because deviation errors arising from the ship's magnetic field influenced compass readings; therefore sextant observations became essential, rather than relying on compasses, in iron hulled ships.

• Which consequence resulted when early chronometers experienced large temperature variations on long sea voyages?
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• Which consequence arises when early Chinese cast iron crossbow trigger mechanisms experienced hydrogen embrittlement?
• Which accuracy risk dramatically decreased for 18th-century transoceanic navigation when the balance spring compensated chronometer improved practical timekeeping?
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• Which consequence results when severe icing altered the sail's curvature on a Viking longship?