Which emergency signal is used when the situation is urgent but not life-threatening?

The emergency signal used when the situation is urgent but not life-threatening is "Pan-pan." This term is specifically designed to communicate to other vessels and maritime authorities that assistance is needed, but the situation does not pose an immediate peril to life or the vessel itself. It effectively conveys urgency without the implications of life-threatening danger associated with a "Mayday" call, which is reserved for emergency situations where lives are at risk.

Using "Pan-pan" allows the communicator to signal the need for help while also allowing for the prioritization of more critical emergencies. This distinction is important in maritime communication, as it helps manage response resources efficiently and ensures that those in dire situations receive timely assistance.