What's a pirate without his ship? NOTHING I SAY!!
In Pirate101 you can get your own ship and travell trough the mysterious Skyways, you can do battles with them and customize every single part of your ship.
When you create your character you can make you own pirate flag, and believe, from what I saw, there are like 1000 different options, go on, ride on your imaginations.
You can get ships by quests or by buying them, you can even give your ship her own name, can't to have my own ship :)