WFRP - Karak Azgal
Sartosa is an island off the southern coast of Tilea which is home to a ruthless pirate-prince (at present a princess) and the criminal-empire she has created. The princess commands a sizable navy of pirate ships commanded by captains loyal to her (at least as long as she guarantees pay/loot for them) and they often raid the coastal settlements of Tilea, Estalia, the Border Princes and Araby.
However despite Sartosa being a haven for criminality and scum of all kinds, it would seem there is a strange honour among thieves. The worship of the Chaos Gods is punishable by death in Sartosa. Furthermore, for a price, the pirates will often help defend a coastal town (especially one which has given haven to them) from attack by marauding Greenskins and other forces. The historical hatred of the corsairs of Araby by the Sartosans ensures that few Arabyan pirates ever live to raid the coast of the southern Old World.