Related Clues:

• 'SOS!'
• Brand invented by an aluminum pot salesman
• Mariner's ''Mayday!''
• Emergency letters
• Titanic's call
• Scary signal
• Plea from the sea
• Castaway's call
• "--- yer old man!"
• Stranded traveler's signal, perhaps
• Seaman's "Help!"
• . . . — — — . . .
• Clorox cleaning product
• Tar's 'Help!'
• ...---...