The Orca was designed to provide the Tau fleet with an escort. Unable to build a drive light enough to produce a normal escort the Orca is transported within a capital ships gravitic sheath. Once unleashed however it is a powerful gunship able to contend with any Imperial or Ork class.

Prow Railgun battery (strength 2 battery, range 30, arcs F )
Prow Ion Cannon Turret (lance strength 1, range 30, arcs FLR)