Related Clues:

• Salty "Halt!"
• Agreed about shindig's second round: Jack's shout
• 'How do you do, fellow pirates?'
• Call from a bridge
• Attention-getter from a distance
• Greeting on a ship
• Signal to a hand
• Call from a crew member
• Coast reports look certain
• Welcome at sea for a Scottish cyclist
• Mariner’s “Stop!”
• Shouted greeting
• To which the term 'littoral' applies
• Stop at sea beginning to assist Titanic
• Hail in a part of Orkney