It looks a little too non-military for the Freespace universe. If it were to be used for said universe however, perhaps it could be the GTVA's first Explorer class ship. The external engines would be more vulnerable to fire, so its by no means a front-line combat ship, but the engines are placed externally, to support both a faster in-space propulsion, and a more advanced subspace drive system. Borrowing a little tech from Inferno, this ship would have an internalized but significantly scaled down Knossos system, allowing the ship to travel through nodes that are more unstable than others (but not necessarily fully collapsed ones). This perhaps would be based partially on Shivan technology, as evidenced by a line in a command briefing late in FS2, about Shivans using unstable nodes during the Great War. It would use this to explore uncharted sectors, basically looking for resources to exploit, useable planets to colonize, and any indications of Shivan presence. The ship's extra in-space speed allows it to evade any enemy cap-ships should it stumble upon a hostile force.