Les Sept Boules de cristal
Chester later lends the "Sirius" to Haddock when he and Tintin set off to find "Red Rackham's Treasure". Chester is briefly mentioned in "The Seven Crystal Balls"—Tintin and Haddock attempt to visit him while he is docked at a port—but he departs before they arrive. He is one of the people to send Haddock a telegram in "The Castafiore Emerald".