Related Clues:

• Bad words to hear from one's barber
• Mariner's distress call
• Message from the Titanic
• Help-wanted letters
• Letters in the sand?
• Signal for help
• ''Mayday!''
• USCG alert
• 'Not good!'
• Request to be rescued
• Morse message
• 'This looks bad!'
• Help wanted letters
• ''We're in trouble''
• 'Help!