Related Clues:

• A big stop!
• 'Halt!,' asea
• Flight plan ref
• Landing abbr
• Airport abbr
• Bo's'n's "Hold it!"
• Something that makes stops on the ocean?
• Air travellers info
• Nautical "Knock it off!"
• Amtrak sched. notation
• "Stop, ya swabs!"
• Weather might delay it: Abbr
• "Halt!" on the seas
• "Stop!" to a sailor
• Sea-Tac posting