Pirate Economy is a national project that enables the nation to use an additional offensive war slot, thereby increasing the cap to 6 offensive wars. This national project requires the nation to have won or lost a combined 50 wars, as well as have already build the Propaganda Bureau national project.
To build this project you need $25,000,000, 10,000 Aluminum , 10,000 Munitions , 10,000 Gasoline and 10,000 Steel .