Destroyer

Behold ! The Destroyer class, the backbone of the fleet.

Destroyers have a strong armor, they are equipped with quite a large amount of weapons, and a group of 5 or 6 Destroyers can stand against a Battleship, and even take it down.
Destroyers are quite common in all fleets, and can be seen patrolling the outer systems quite regularly. They are also used as support ships, in Carrier groups.