Related Clues:

• Admiral's concern
• Water sport
• 'Halt!'
• Shipmates
• ''Titanic'' extras
• Salt's ''Halt!''
• Fast boats
• London event of 1666
• 'Stop, sailor!'
• Fast on one's feet
• All aboard?
• Call to a swab
• Nautical imperative
• Truck collection
• Bunch of battleships