🔍 Key Concepts

• Distress procedures for radiotelephone (voice) on VHF/MF/HF • Difference between an initial distress call and a follow-on distress message • Correct use of the words MAYDAY, All Ships, and All Stations in GMDSS/voice procedures

💭 Think About

• Think about what specific distress word must be repeated three times in a true life‑threatening emergency and whether that word is still used in the follow‑on message. • Consider whether you are calling a particular station, all stations, or all ships when you are already in distress and giving details like position and nature of distress. • Ask yourself: in standard IMO/ITU distress procedure, when do you say the ship’s name/call sign three times, and when might you only say it once?

✅ Before You Answer

• Verify the standard format of the distress follow‑on MESSAGE (not just the initial call) in ITU/IMO voice procedures. • Check whether the word MAYDAY is required at the start of both the initial call and the follow‑on message, and how many times it is spoken. • Confirm whether All Ships or All Stations is actually used in a MAYDAY follow‑on, or if the call is structured differently.