Which of the following tools might a GPOW use in their duties?

A Gangway Petty Officer of the Watch (GPOW) is responsible for maintaining the safety and security of the ship's access points, primarily the gangways. In this role, communication is key. Communication devices are essential tools for a GPOW as they facilitate coordination with other personnel, ensure that any security breaches are promptly reported, and allow for the efficient exchange of information regarding boat traffic, personnel movement, and emergencies.

Utilizing communication devices enables real-time updates and instructions, which is critical for maintaining order and safety in the bustling environment around a ship. This may involve using handheld radios to communicate with watch teams or security forces, thereby enhancing situational awareness and response times.

While navigation charts are important for overall ship navigation, binoculars can aid in surveillance, and fire extinguishers are vital for firefighting, the primary responsibility of a GPOW revolves around effective communication. Hence, communication devices stand out as the most pertinent tools in their daily operations and responsibilities.