What action should a GPOW take if an unauthorized person attempts to board the vessel?

The appropriate action for a Gangway Petty Officer of the Watch (GPOW) when encountering an unauthorized person attempting to board the vessel is to deny entry and notify the Officer of the Deck. This response aligns with security protocols, which are designed to ensure the safety and security of the vessel and its personnel.

Denying entry is crucial because unauthorized individuals can pose a security threat, potentially leading to theft, sabotage, or other criminal activities. By taking a proactive stance and ensuring that only authorized personnel are allowed access, the GPOW plays an essential role in maintaining the integrity of the vessel’s security perimeter.

Notifying the Officer of the Deck is equally important because this person is responsible for the overall security and safety of the vessel. They can assess the situation and determine if further action is necessary, such as contacting security forces or law enforcement. This collaboration helps ensure that all actions taken are appropriate and within the established security protocols.

In contrast, ignoring the unauthorized individual could lead to a breach of security, and allowing entry based solely on identification without verifying its authenticity might compromise the vessel's safety. Additionally, calling for backup personnel should not be the first course of action unless the situation escalates beyond the GPOW's control, as the