Related Clues:

• 'Rescue us!'
• Mariner's call for help
• Seaman's call for assistance
• Message in a bottle
• Skipper's "mayday"
• Sailor's call for help
• Titanic signal
• 'Sending out an ___' (repeated Police lyric)
• Popular pad
• Message on the beach of a remote island, maybe
• Captain's "I need help ASAP!"
• Song in 'Mamma Mia!'
• Call hidden in this puzzle's eight longest answers that's apt for May Day?
• 'Help!,' asea
• Distress call letters