You see an iceberg that has not been...

🔍 Key Concepts

• Categories of radio traffic in the Global Maritime Distress and Safety System (GMDSS): distress, urgency, safety, routine • Purpose of navigational warnings (like unreported dangers to navigation such as ice, derelicts, submerged objects) • Which type of message is used to protect safety of navigation versus immediate danger to a specific vessel

💭 Think About

• Is an unreported iceberg an immediate life‑threatening situation to your vessel right now, or is it primarily a danger to navigation for all vessels in the area? • Which radio priority is specifically intended for messages about hazards to navigation and weather warnings? • How are distress, urgency, and safety calls ordered in terms of priority, and which fits a new danger like an iceberg that others need to avoid?

✅ Before You Answer

• Verify which category covers immediate grave and imminent danger requiring immediate assistance • Verify which category is used for navigational and meteorological warnings to other ships • Make sure you are not using the highest priority traffic category unless a vessel is actually in distress

You see an iceberg that has not been reported. What kind of radio message do you transmit to warn others?

Urgency message

Distress message

Safety message

Routine message