A Starfleet vessel destroyed alongside the USS Majestic in 2374 during the fleet action to retake Deep Space 9 from the Dominion.
The USS Sitak is named in the Deep Space Nine episode Sacrifice of Angels. It is part of the combined force of some six hundred ships that Sisko leads against a much larger Dominion and Cardassian fleet in order to reach the station before the minefield across the wormhole is brought down.
As the Federation ships try to punch through a gap that Dukat has deliberately opened in his lines, the losses mount, and the Defiant's bridge crew report that the Sitak and the Majestic have both been destroyed.
The two ships are shown as Miranda-class vessels breaking up under fire just ahead of the Defiant. Their loss leaves the Defiant close to alone until Klingon reinforcements under Worf and Martok arrive and open the way through.