🔍 Key Concepts
• DSC (Digital Selective Calling) priority levels: distress, urgency, safety, routine
• When a situation involves immediate danger to life or the vessel versus a hazard to navigation or safety information
• The typical use of Safety (SECURITÉ) calls in GMDSS communications
💭 Think About
• Which of these situations involves an immediate threat to life requiring the highest priority, and which are serious but not yet life‑threatening?
• In GMDSS, how is a Safety/SECURITÉ call normally used: to report what kind of conditions or information?
• For each option, ask: would this more likely be handled by a Distress (MAYDAY), Urgency (PAN PAN), or Safety (SECURITÉ) call?
✅ Before You Answer
• Know the formal definitions of Distress, Urgency, and Safety in GMDSS/DSC procedures
• Match each answer choice to the correct priority level (distress, urgency, safety) based on the risk described
• Verify which situations are primarily about navigational or safety information to other vessels, rather than requesting immediate assistance for your own vessel