Tool to decrypt/encrypt with the international maritime/navy signal flags/code automatically to communicate with ships.
Navy Signals Code - dCode
Tag(s) : Communication System, Symbol Substitution
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The International Code of Maritime Signals is a visual communication system used in maritime navigation to transmit messages at a distance between ships or between a ship and the coast. It is made up of a set of flags (pavilions/semaphores) each having a meaning.
Example: 'FLAG' is coded
The digits have a different shaped flag:
repeat the first flag
repeat the second flag
repeat the third flag
repeats the fourth flag (not used in the official version of the International code)
The ciphered message is made of flags (squared) in basic colors: blue, white, yellow, red, black (no green and no compound colors) offering a large contrast.
Flags used in the navy, do not necessarily mean a distress signal, they can handle a radio problem and help ship navigation.
All references to the navy, naval forces (Royal Navy, US Navy etc.) and boats, lighthouses or distress situation (use of flare, buoy, whistle) in general are clues.
NATO uses 10 other flags (square format) to encode digits.
The International Maritime Signals Flags system is used to facilitate communication between ships, especially when they are at a distance or when they cannot use radio or other electronic means of communication. It is used to transmit messages such as warnings, requests for help, navigation instructions, etc.
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Cite as source (bibliography):
Navy Signals Code on dCode.fr [online website], retrieved on 2023-12-03,