Which of the following devices is NOT part of the OOD comms equipment?

The radar system is not considered part of the Officer of the Deck (OOD) communications equipment. The primary purpose of the OOD's communications tools is to facilitate direct communication between the OOD and other essential personnel, ensuring effective command and control during operations. Devices such as sound-powered phones, the general alarm, and chemical alarms are specifically designed for immediate communication or warning purposes relevant to the OOD's responsibilities.

Sound-powered phones enable clear voice communication without relying on external power, which is crucial in various operational scenarios, particularly in combat situations where power might be disrupted. The general alarm serves as a vital alerting system to signal all personnel on the ship of emergencies or critical situations, ensuring everyone is informed and can take appropriate action. The chemical alarm warns the crew of potential hazardous exposure to chemical agents, further emphasizing the importance of immediate communication regarding safety.

In contrast, while the radar system is essential for navigation and situational awareness, it does not directly fall under the category of comms equipment used specifically for relaying messages or alerts related to the OOD's command functions. Therefore, it is correctly identified as not part of the OOD communications equipment.