Related Clues:

• Poseidon's call
• Mayday cousin
• CQD successor
• Terse radio message
• 'Mayday!'
• '-- your old man!'
• Mayday!
• It's sometimes written in the sand
• Maritime message
• Urgent request
• Urgent letters?
• Distress call
• ···---···
• ___ pad
• "Send help!"