For how long must mobile stations listen...

🔍 Key Concepts

• Urgency communications (PAN PAN) requirements in the GMDSS (Global Maritime Distress and Safety System) procedures • Difference between distress, urgency, and safety signals and how follow‑up communications are handled • Standard ITU/USCG guidance on required listening watch time after receiving special category calls

💭 Think About

• Think about why a mobile station needs to keep listening after an urgency signal is heard—what could happen right after the initial signal? • Which of these times is commonly associated with required listening/watching periods in other radio procedures you’ve studied? • How does the need to avoid blocking the channel influence how long you should wait and listen before transmitting or standing down?

✅ Before You Answer

• Verify what the ITU/USCG rules specifically say about follow‑up watch time after urgency (PAN PAN) signals for mobile stations • Check that the time requirement you choose is explicitly tied to urgency, not distress (MAYDAY) or routine/safety calls • Confirm that the required time is a minimum listening period and not related to silence periods or DSC (Digital Selective Calling) watchkeeping requirements

For how long must mobile stations listen after hearing an urgency signal?

For at least 5 minutes

For at least 30 minutes

For at least 3 minutes

None of the above

🔍 Key Concepts

💭 Think About

✅ Before You Answer