Related Clues:

• Tapped-out message, often
• Seaman's "911"
• ''Mayday'' relative
• Ship's distress call
• Song from 'Mamma Mia!'
• Brillo shelfmate
• Soap-pad brand
• Urgent request to the USCG
• "Help!" at sea
• 'Save me!'
• "H-E-L-P!"
• Maritime distress signal
• Sailor's "Mayday!"
• Call in a watery calamity
• Message in a storm