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there are 28 semaphore flag methods.
Semaphore or signal flag.
45cm by 45cm
It is a semaphore. They use flag signals to communicate with other ships.
It is called "Semaphore code".
You would use the alphabet of the semaphore flag signaling system. See the related link for the picture of signals.
The semaphore flag signaling system was developed by Claude Chappe in France during the late 18th century. Chappe's system used a series of different flag positions to convey messages over long distances, and it was widely used for communication before the invention of the telegraph.
Semaphore is one such system.
It is the flag-semaphore signal for N and the symbol for D put together...standing for nuclear disarmament.
Morse code is an audio code (or blinking light code), it has nothing to do with flags.When flags are used to send messages, this is called semaphore, so they would be "semaphore flags".See the related links below.
1. an apparatus for conveying information by means of visual signals, as a light whose position may be changed. 2. any of various devices for signaling by changing the position of a light, flag, etc. 3. a system of signaling, esp. a system by which a special flag is held in each hand and various positions of the arms indicate specific letters, numbers, etc.
Signals can be sent by flaghoist, signal lamp ("blinker"), flag semaphore, radiotelegraphy, and radiotelephony.