Referred to by surprised ISA forces as advanced battlecruisers or battleships, the Arc Cruiser was an advanced offshoot of the standard Cruiser production line. An extension of the Helghast military's program to weaponize Petrusite, the new warship lead the counter attack in the wake of the nuclear detonation of Pyrrhus. After the destruction of Helghan this design was apparently scrapped and none were part of the fleet that took in the evacuation of Helghan nor were any seen during the days of the Cold War on Vekta.