Final answer:
Naval messages are sent with four precedence levels: Routine (R) within 6 hours, Priority (P) within 3 hours, Immediate (O) within 30 minutes, and Flash (Z) within 10 minutes, each with their respective symbols to indicate urgency.
Step-by-step explanation:
The four precedence levels for sending out a Naval message along with their symbols and timelines are as follows:
- Routine (R): This level is for standard day-to-day operations that do not require immediate attention. Messages are expected to be delivered within 6 hours.
- Priority (P): Used for important tasks that require timely coordination and should be actioned before routine messages. These messages are typically delivered within 3 hours.
- Immediate (O): This level indicates that the message requires rapid action or decision. Immediate messages are to be delivered within 30 minutes.
- Flash (Z): The highest level of precedence, reserved for messages of extreme urgency, such as those vital to national survival. Flash messages are to be delivered within 10 minutes.
The symbols R, P, O, and Z are used to designate these precedence levels. The timeline for each level of precedence indicates the maximum time allowed for a message to be delivered after its release by the originating station.