Among the first true production ships in the new Imperial Fleet were the Frigates:
-About .75 Kilometers in length
-Equipped with anti-fighter weaponry and anti-ground weaponry
-Largest ship in the fleet that can go planet side.
-Equipped with stealth systems, only ships in the fleet with stealth.
-Carries out planetary dog fights, bombings, recon, and short range system patrols. Dubbed 'The Work Horse of The Fleet'
Frigates, are equipped with all the latest and greatest tech The Empire has to offer and tech that is exclusive to Frigates, such as the Stealth Drive. There fast and agile, which goes well with the Arion attack plan of hitting the enemy fast and hard. Frigates can clear a lane for advancing ground forces. Then when the payload is exhausted, drop a Destroyer or two since you'd be hard press to find a Frigate that didn't have at least one Destroyer on it.