Related Clues:

• Argo, e.g.
• Undersea prowler
• Mail
• He'll give a starter a rest
• Ship
• Cutter or clipper
• Crow's-nest sighting
• Red October, for one
• Ocean crosser
• Use UPS
• Half Moon, e.g.
• U.P.S., say
• Fill in
• Deli choice
• K-19, for one