What does the 'SOS' signal indicate?

The 'SOS' signal is universally recognized as a distress signal, indicating that someone is in urgent need of assistance. This signal is used in maritime and aviation contexts, among others, to communicate that there is an emergency situation where immediate help is required. When a vessel emits an SOS signal, it alerts other ships and rescue services that they should quickly respond to provide aid.

The simplicity and distinctive nature of the SOS signal (three short signals, three long signals, followed by three short signals) make it easy to recognize and transmit, even under challenging conditions. As such, it serves as a critical tool for communication in emergencies, ensuring that individuals who are in danger can effectively call for help.