The Tantive IV was Princess Leia's modified CR90 Corvette. The first appearance is at the end of Episode III: Revenge of the Sith, when Obi-Wan Kenobi boards the ship to meet up with Yoda after the clones turn against the Jedi. It is also the first location we see in Episode IV: A New Hope, when the Rebel troopers are trying to keep Imperial forces out of the ship. Princess Leia sends a pod from the ship carrying C-3PO and R2-D2 to Tatooine, and is soon siezed by the troops of Darth Vader
Tantive IV: Interior is a map in Star Wars: Battlefront II. These are pretty much the only parts played by the ship in the films. Recognizable features include the hallway where Imperial troops break into the ship and the corridors where Princess Leia puts the droids into the escape pod. Close quarters and short hallways make this map a breeding ground for close-range combat. One of the stranger aspects of this location is that there are two escape pod places, both featured as Command Posts as well.