Related Clues:

• "Mamma Mia!" number
• Titanic transmittal
• 911 call, e.g.
• ABBA number
• ''Help, quick!''
• ''I'm foundering!''
• Pad name
• 'Hel-l-lp!'
• Sign of desperation
• It might be sent from a bridge
• Message from a bridge
• Help-wanted request
• 2006 Rihanna hit
• "Send the Coast Guard!"
• Plea to the Coast Guard