Related Clues:

• Gob stopper?
• Cry from Captain Ahab
• Captain's "Hold it!"
• A very extensive maritime order
• A huge shipping order?
• Stop one sweeping
• A prodigious sailor's cry
• "Sail no farther!"
• A big stop!
• 'Halt!,' asea
• Bo's'n's "Hold it!"
• Something that makes stops on the ocean?
• Anchor, as a nautical rope
• Nautical "Knock it off!"
• "Stop, ya swabs!"