What information should be included in a Mayday message?

• A. Vessel name and call sign/MMSI, position, nature of distress, number aboard, injuries, toward assistance, and any hazards.
• B. Time of day and sea state only.
• C. Vessel color and length.
• D. Weather forecast for the next 24 hours.

Answer: (A)

The essential idea is that a Mayday message must give enough information for rescuers to find you, identify you, understand the emergency, and plan the response. The best answer includes the vessel’s identity (name and call sign or MMSI), your exact position, the nature of the distress, how many people are aboard, whether anyone is injured, the type of assistance required, and any hazards present. Identifying the vessel helps responders verify who is calling and contact authorities; a precise position is needed to define the search area; stating the nature of the distress informs responders what resources and actions to deploy (firefighting, towing, medical help, etc.); the numbers aboard and injuries guide triage and resource allocation; specifying the required assistance clarifies the rescue plan; and noting hazards (fuel leaks, fires, dangerous conditions) warns rescuers and helps keep the operation safe. Other options miss critical elements like location, the exact emergency, casualties, or hazards, making it harder to coordinate a rapid and effective response.