Which of the following scenarios is a sign of potential structural integrity issues on a vessel?

A change in list/trim, draft, and vibration is indeed a sign of potential structural integrity issues on a vessel. These factors are critical to the stability and seaworthiness of a marine vessel.

When a vessel's list or trim deviates from normal levels, it indicates an imbalance likely caused by water ingress, cargo shifting, or damage to the hull. An abnormal draft reading can reveal flooding in one compartment, possibly affecting the vessel’s buoyancy and stability. Additionally, increased vibration might suggest problems with the propulsion system or structural anomalies, potentially leading to failure if not addressed.

Together, these changes suggest that the structural integrity of the vessel may be compromised, necessitating immediate investigation and corrective action to ensure safety at sea. Understanding these signs is essential for effective damage control and maintaining the vessel’s operational capabilities.