Which factor is NOT evaluated during a survey of a vessel?

The correct answer is maintenance schedules, as this factor typically does not directly relate to the security evaluation of a vessel. During a survey, the focus is primarily on assessing aspects that can impact the vessel's security risk and overall safety. This includes evaluating security systems to determine how effectively they protect against unauthorized access or threats.

Physical characteristics, such as the vessel's design and structural integrity, are also scrutinized, as they can influence vulnerabilities or resilience against security breaches. Personnel procedures, which encompass the protocols followed by crew members regarding security measures, are critical to understanding how well the vessel is equipped to handle security challenges.

In contrast, maintenance schedules, while important for the operational integrity of the vessel, do not directly address security concerns in the way that the other factors do, making them less relevant in the context of a security survey. This distinction clarifies why maintenance schedules are not a focus during a vessel security evaluation.