The S.S. Anne is a ship from the Pokemon games, and it's a key location in Pokemon Red, Blue, and Yellow. It's not associated with the movie *Titanic*, which is what the "SS Anne" in your prompt might be referencing.
However, if you're talking about the Pokemon Yellow version, there's no actual "SS Anne" to sail on! The ship you take in Pokemon Yellow is called the S.S. Aqua.
When the S.S. Aqua sets sail, here's what happens in Pokemon Yellow:
* You get to explore a new area: The S.S. Aqua is a unique location with its own set of Pokemon to catch, including the rare Snorlax!
* You encounter a rival: You'll likely run into your rival, Gary Oak, onboard the ship.
* You advance the story: The S.S. Aqua plays a crucial role in advancing the game's main story.
* You can train your Pokemon: The S.S. Aqua has a variety of trainers for you to battle and level up your Pokemon.
So, to answer your question, when the S.S. Aqua sets sail, it's time for adventure and excitement!