Related Clues:

• Starting cryptogram guess, perhaps
• Pittsburgh-to-Boston dir.
• Weather vane letters
• It's opposite WSW
• Yachter's heading, perhaps
• Turin-to-Milan dir.
• Navigational dir.
• San Antonio-to-Austin dir.
• Denver-Chicago dir.
• Nantes-to-Paris dir.
• Elmira-to-Syracuse dir.
• WSW opposite
• Fuel suffix
• Helm heading, perhaps
• Pomona-to-San Bernardino dir.