flag signals
Naval message system
Flag signals are a system of communication using flags to convey messages, especially between ships at sea.
Maritime flag signals follow standardized codes where individual flags represent letters, numbers, or specific meanings: a yellow flag signals quarantine, a white flag indicates surrender or truce.
The practice extends to semaphore, where flag positions spell out letters.
The ship hoisted flag signals requesting a pilot.
- hand signalsCommunication through arm movements
- wigwagOscillating signal motion
- distress signalsUrgent pleas for rescue
- pennantsTapering nautical flags
- warningAlert about danger
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flag signalsradio transmission
Wireless electromagnetic signal
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flag signalssatellite communication
Transmission via orbiting relay
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