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International Code Of Signals

The International Code of Signals is a standardized system of signals used for communication between vessels at sea. It includes a set of flags, pennants, and signals that represent letters, numbers, and common phrases. This system allows ships from different countries to communicate with each other, overcoming language barriers and ensuring clear and standardized communication in various maritime situations.

The code flag O "Oscar" means ' Man overboard . '


The code flag Q "Quebec" means Ship meets health regs; request clearance into port.

The code flag R "Romeo" means ' I have received your signal . '

The code flag S "Sierra" means  "my engines are going full speed astern"

The code flag T "Tango" means ' Keep clear of me; I am engaged in pair trawling . '

The code flag U "Uniform" means ' You are running into danger . '

The code flag V "Victor" means ' I require assistance . '

If you see the W (Whiskey) flag,  the boat has a medical emergency and needs help . The combination of the D (Delta) and V (Victor) flags, meanwhile,...

The code flag X "X-ray" means ' Stop carrying out your intentions and watch for my signals . '

The code flag Y "Yankee" means '  I am dragging anchor . '

The code flag Z "Zulu" means  'I require a tug . ' When made by fishing vessels operating in close proximity on the fishing grounds it means: “I am...

Each numeral pennant typically corresponds to a specific digit, and they are arranged in a specific order to represent multi-digit numbers.

The Numeral Pennant No. 1 refers to the flag or pennant that represents the digit "1" in the International Code of Signals used in maritime communication.


Each numeral pennant typically corresponds to a specific digit, and they are arranged in a specific order to represent multi-digit numbers.

The Numeral Pennant No. 2 refers to the flag or pennant that represents the digit "2" in the International Code of Signals used in maritime communication.


Each numeral pennant typically corresponds to a specific digit, and they are arranged in a specific order to represent multi-digit numbers.

The Numeral Pennant No. 3 refers to the flag or pennant that represents the digit "3" in the International Code of Signals used in maritime communication.