The Empire has fallen and a New Republic is born out of the conflict. But in the ashes of civil war, yet another life stirs...
A totally new design, the Aggressor-class is so stereotypically Mandalorian that it's almost comical. In fact, it can be accurately stated that the Aggressor is not a ship but rather, a gun with an engine built around it.
Because of their small numbers when compared to the Imperial Remnant and the New Republic, the Mandalorian navy decided that rather than trying to compete with numbers, they needed a capital ship that could provide the stopping power of several ships but all condensed into a single craft. The Aggressor is the product of that research. While it is a capital ship by size classification, it has no hangar bays or extra peripherals as the entire ship (aside from crew quarters) is devoted to the massive powerplants needed to fuel the colossal main cannons, the shields, engines, and secondary armament.
Another notable aspect of the ship is that it uses beam laser technology in the main cannons. While these types of lasers are not unique, they are highly uncommon especially when employed in guns this size. The two cannons deliver a sustained pulse of intense firepower that obliterates targets quickly and eats through shields but requires ample time to recharge.