Ahab’s boat stays beside the whale he killed all night, waiting for the ship to be able to pick it up. Everyone is asleep except Fedallah.
Ahab jerks awake and tells Fedallah he’s had the same dream again.
Fedallah explains the dream and Ahab’s fate in cryptic terms: before Ahab can die on the voyage, he will see two hearses on the sea, "the first not made by mortal hands" and the second made of American wood.
Fedallah also predicts that he will "go before" Ahab.
Plus, Ahab can only be killed by hemp—which he takes to mean being hanged on the gallows.