The Vorchan class medium warship is one of the newer starships in the Centauri fleet.
Ships of this class were built by House Tavari Armaments at the Hevaria Orbital Shipyards over Tolonius VII.
Usually its primarily use is as an escort for carrier fleets and as a fast interceptor.  Though often operating in small squadrons, they are sometimes sent out alone to carry out hit-and-run tactical strikes.  This warship is also configured for atmospheric flight. 
The warships' weaponry consists of 2 twin plasma acceletors, missiles for planetary bombardment and guided mines. The plasma accelerators have been known to destroy a NarnG'Quan class heavy cruiser in as little as 6 shots.  This type of weapon is used by Centauri forces mainly in a configuration which causes explosive damage to the target rather than slicing through its hull. 
These warships are used as a complement to the large and less maneuverable Primus class battlecruisers to provide fighter cover for them. The Vorchans can be easily constructed and repaired, but their survival expectancy when they took critical damage is fairly low in comparison with the Primus class.
"If there was any inspiration for the design, I know I wanted to do something ornate yet aggressive, which was the Centauri motif, I was probably partially thinking of the Klingon Bird Of Prey and Warship from Trek. The main design alteration were the crescent wings, which seemed more Centauri."
– Adam Lebowitz in interview with B5Scrolls talking about design process