Which consequence arises aboard Viking longships when differential solar heating loads create asymmetric stress within the sailcloth?

💡 Explanation

Asymmetric sail stress causes deformation, which means the sail's aerodynamic profile changes, making tacking, a maneuver where a ship turns its bow into the wind, more difficult because precise sail control is compromised. Therefore, tacking is degraded rather than rudder functionality which deals with steering, because deformation interferes with airflow.

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