Which risk was magnified when Viking longships encountered rapid tidal changes?

💡 Explanation

Seam failure increased because hogging and sagging underwent drastic and rapid cycles under tidal forces which caused differential stresses overcoming friction along planks, therefore the hull integrity was threatened rather than masts which could be lowered; rowing/steering were secondary concerns.

• Which action risked catastrophic failure initiating 'hogging' aboard Viking longships?
• Which consequence results when medieval Persian metalworkers introduced small weight inaccuracies to calibrated astrolabes during production?
• Which acute threat arose during tunnel warfare by Roman legionary sappers when undermining enemy fortifications?
• Which risk increases when the angle of a Roman scutum shield weakens in flexion during sustained siege assault?
• Which condition necessitates increasing the irrigation canal width, derived algebraically, in a medieval Persian qanat system?
• Which outcome occurred in early Viking longships subjected to beam reaching winds?