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← HistoryWhich outcome occurred when Medieval longship sails experienced increased wind speeds?
A)Rudder function became unreliable
B)Center of effort shifted✓
C)Hull keels experienced shear stress
D)Sailcloth structural integrity improved
💡 Explanation
Higher wind speed shifts the sail's center of pressure, causing a 'weather helm' effect; this occurs because the increased force moves the center of effort forward, therefore the ship turns into the wind, rather than maintaining a straight course.
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