Related Clues:

• '...and ___ yours!'
• Call for a mate
• ... _ _ _ ...
• Message in a bottle?
• Urgent
• Mariner's cry
• Salty shout
• Cry from the crow's-nest
• Alert asea
• 'Help, quick!'
• Plea asea
• Bounty bellow
• Shipwreck signal
• Theme of the puzzle
• ''Yo!'' nautically