Which consequence resulted from inadequately maintained tar on Viking longships?

💡 Explanation

Hogging, where the ship's ends droop, increases because water intrusion weakens the hull as the tar degrades; the weakened hull loses longitudinal stiffness. Therefore, structural failure risk escalates, rather than just keel erosion or impaired oar usage.

• Which risk increases when a medieval trebuchet bridge uses insufficiently lubricated capstan bearings?
• Which effect limited image resolution in early Islamic-era concave mirrors used for burning during sieges?
• Which risk increased during the expansion of ancient Mesopotamian irrigation canals beyond natural river floodplains?
• Which structural issue caused earthen fortifications like motte-and-baileys to require continuous maintenance during siege conditions?
• Which risk increased on 18th-century wooden warships primarily due to the galvanic corrosion mechanism?
• Which water management adaptation helped sustain chinampa agriculture productivity in highland Mesoamerica?