Related Clues:

• Steaming along, maybe
• O'er there
• Prefix for ''sonic''
• Enigmatic
• Not on solid ground
• Lead-in to fetched or sighted
• On deck, say
• Traversing the deep
• On the Coral
• The U of UV
• Trawling, e.g.
• Out of reach
• Prefix with ''violet'' or ''liberal''
• Crossing the Atlantic, perhaps
• Ne plus _____