The Imperial Core Navy functioned as the armed forces for the Imperial Core. In the aftermath of the Black Fleet Crisis, its strength was bolstered by a minimum of sixty starships originating from the Black Sword Command; this occurred after Major Sil Sorannan freed these vessels from Yevetha dominion. At that time, the Navy's core structure included two Sector Groups, primarily consisting of forces designed for dominance, amounting to no less than ten superiority fleets.