Citadel class

The Citadel class were a type of dreadnought developed by the Voth species who used them by the early 25th century. These starships were rarely seen but quite able to hold of small fleets of other vessels. This was achieved by their use of the highly advanced Voth technology such as gravity wells, tractor beams and several Aceton Drones. Though slow moving, they made use of wide angle torpedo deployment system that allowed them to launch Transphasic Chroniton weapons in any direction. This same system was also able to deploy seeking charges designed to home in on stationary targets. (STO website: Designing the Voth Space Combat Experience)