Which restriction forced Viking longships during Trans-Atlantic travel routes to navigate by latitude using a nocturnal?

💡 Explanation

Unreliable magnetic compass readings near the poles challenged navigation because magnetic deviation increased uncertainty; therefore, sailors required celestial navigation techniques, using the nocturnal rather than depending on the compass, due to magnetic influences.

• Which consequence occurred when the Byzantine silk industry attempted total control over available dyestuffs?
• Which limitation was mitigated by the introduction of copper sheathing on wooden ships' hulls in the 18th century?
• Which consequence results when a 18th-century wooden ship encounters marine woodworms in tropical waters?
• Which outcome occurs when extensive pre-Columbian chinampa systems experience prolonged freshwater inundation?
• Within Mughal garden design, which consequence results when hydraulic head exceeds pressure capacity?
• Which outcome occurred when Mesopotamian canals experienced excessive silt accumulation near off-take points?