Related Clues:

• Outboard motor areas
• Backs in a regatta
• Parts of clippers
• Liners' rear ends
• Poop decks' locales
• Rudder locales
• Kins of afts
• Counterparts of bows
• Ships' rears
• Ends of liners
• Backs of yachts
• Backs at sea
• Ship parts opposite bows
• Backs in the America’s Cup
• Backs of boats (... first 4)