Which security measure is commonly implemented by a VSO?

Access control and surveillance systems are essential components of a Vessel Security Officer's (VSO) responsibilities. These systems are designed to monitor and regulate who can enter and exit secured areas, ensuring that only authorized personnel gain access to sensitive locations within a port or vessel. By implementing robust access control measures, VSOs can effectively manage security threats, preventing unauthorized individuals from compromising the safety and security of the vessel or the port facility.

Surveillance systems, such as cameras and motion detectors, play a critical role in providing real-time monitoring, which helps in the early detection of security breaches or suspicious activities. This combination of access control and surveillance not only deters potential security threats but also provides a means to respond quickly to incidents as they arise.

The other options do not directly align with the core security measures expected of a VSO. Improvised weapon training, while may be useful in extreme situations, is not a standard security measure. Offering discounts or increasing ticket prices for visitors are more related to economic strategies rather than security protocol. Thus, implementing access control and surveillance systems stands out as a fundamental and effective security measure in the role of a Vessel Security Officer.