🔍 Key Concepts

• Digital Selective Calling (DSC) priority levels: Distress, Urgency, Safety, Routine • How urgency (PAN-PAN) messages are intended to reach other vessels and/or coast stations • Difference between a call to an individual station vs all stations in DSC procedures

💭 Think About

• Think about the nature of an urgency situation: who needs to be alerted and why might a broad or narrow call be used? • Compare how a distress (MAYDAY) DSC alert is addressed with how urgency traffic is usually set up—are they more similar to general alerts or to routine traffic? • For each choice, ask: does this match standard GMDSS/DSC practice, or does it describe something more like routine calling or an unusual sequence?

✅ Before You Answer

• Verify how a DSC Urgency call format is typically addressed in the GMDSS procedures (all stations vs individual station). • Check whether there is any standard procedure that sends a call first to coast stations then later to ships—is that actually a defined DSC behavior? • Confirm the normal use of individual station calls in DSC: are they generally for urgency, or more for routine/normal traffic setup?