When Starfleet took over operation of DS9 in 2369 they overhauled the stations weapons systems. The Cardassian tetrahedral phaser emitters, which the Cardassians had messily removed before leaving were replaced with standard type-IX phaser turrets and type-XI phaser arrays. These emplacements provided near a 360 degree sphere for defense, only interrupted by targets obscured at close range by the docking ring and pylons. Each sail tower included two launcher tubes for photon torpedoes.