Bulwark class

The Citadel class were a type of battleship developed by the Voth species who used them by the early 25th century. These starships had multiple roles from warships to fleet support vessels thus serving as the primary component of Voth fleets. They also made use of highly advanced technology such as reflective shields that turned enemy attacks back against them and could deploy Aceton Drones that drained energy from enemy vessels. (STO website: Designing the Voth Space Combat Experience)