page_title: Recognition signal
hierarchical_section_title: Recognition signal
caption_attribution_description: English: The forward superstructure of HMS Belfast, with the 6inch guns at the forefront and the signal / radar mast at the back. Français&#160;: La superstructure avant du HMS Belfast, avec les canons A et B de 6 pouces à l'avant-plan et le mât à signaux et radars à l'arrière-plan.
context_page_description: A recognition signal is a signal where a person, a ship, an airplane or something else is recognized. They can be used during war or can be used to help the police recognize each other during undercover operations. It can also be used in biology to signal that a molecule or chemical is to be bound to another molecule.
context_section_description: A recognition signal is a signal where a person, a ship, an airplane or something else is recognized. They can be used during war or can be used to help the police recognize each other during undercover operations. It can also be used in biology to signal that a molecule or chemical is to be bound to another molecule.
caption: HMS Belfast using International maritime signal flags as a recognition signal
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