 Chapter 9: The Waterbending Scroll",  Zuko and the pirates search for Aang and his friends by sailing a  steamboat and the pirate ship up a river inland from a port. Later,  when Aang and his friends escape from Zuko and the pirates and are  fleeing from them, they sail down the same river and encounter a  waterfall. How did Zuko and the pirates get the steamboat and the  pirate ship up over that fall in the first place?