Related Clues:

• Balsa transports
• River floaters
• A large number
• River vessels
• Vessels often made of balsa
• Flat boats
• Flat floats
• Castaways' escape vehicles
• Braves the white water
• Waterpark conveyances
• Huge quantities
• Castaway creations
• "The River Wild" vessels
• Lifeboat cousins
• Inflatable floatables