What is the proper procedure to call Mayday on a VHF radio?

What is the proper procedure to call Mayday on a VHF radio?

• A. On Channel 16: "Mayday, Mayday, Mayday" followed by vessel name, position, nature of distress, number aboard, injuries, and assistance requested; then switch to a working channel.
• B. Speak quietly to nearby boats on Channel 70.
• C. Send a text message to emergency services.
• D. Use Channel 9 and do not disclose your position.

Answer: (A)

The key idea is that a Mayday on a VHF radio must start on Channel 16, the international distress and calling channel, with a loud, clear threefold cry of “Mayday.” Immediately after that, identify your vessel and provide essential details: your vessel’s name, your position, the nature of the distress, how many people are aboard, any injuries, and the type of assistance you need. After this initial distress call, switch to a working channel to continue the conversation and coordinate rescue with rescuers or nearby vessels. This sequence ensures the emergency signal is heard by all stations and allows for practical, two‑way communication on a channel meant for voice traffic. Other options don’t fit because they either use the wrong channel for an emergency, attempt non-voice or non-instant communication (like texts), or omit critical information that would delay rescue.

The key idea is that a Mayday on a VHF radio must start on Channel 16, the international distress and calling channel, with a loud, clear threefold cry of “Mayday.” Immediately after that, identify your vessel and provide essential details: your vessel’s name, your position, the nature of the distress, how many people are aboard, any injuries, and the type of assistance you need. After this initial distress call, switch to a working channel to continue the conversation and coordinate rescue with rescuers or nearby vessels. This sequence ensures the emergency signal is heard by all stations and allows for practical, two‑way communication on a channel meant for voice traffic. Other options don’t fit because they either use the wrong channel for an emergency, attempt non-voice or non-instant communication (like texts), or omit critical information that would delay rescue.