[quote=Winter]
Awesome, you now have another ship under your command, captain ^^I'll be your... co captain? I have no idea what you'd call it in pirate terms. Either way it'll be fun!
[/quote]

Co-Capitan is called First Mate. But, if a pirate has more than two ships under his command, he is the Commander, and the other captains of the ships are still Captains.