1.What does Mayday mean in marine（maritime）communication?
---- Mayday means to announce distress message.
2. What should be included in mayday message?
Mayday message should include: ship’s name, call sign, distress position, nature of distress,assistance required, and so on.
3. What should a signal be prefixed by for distress traffic by radiotelephony?
---- Distress traffic should be prefixedby distress signal MAYDAY.
4. How many times should the distress signal “MAYDAY” bespoken when sending a distress call?
It should be spoken three times.
5. What’s (should) the distress signal (be)prefixed by for sending a distress call?
Thedistress signal is prefixed by “Mayday” .
