Variant on the Constitution class, less capable, but less expensive. Smaller ship can be specialized for science or other mission profiles, but cannot carry the variety of equipment that the multimission ships can. No holodecks. Two shuttlebays at aft of primary hull. Relatively small spaceframe in comparison to Constitution-style warp nacelles make this more agile than the larger Constitution ships.
ABOUT THE STARFLEET SPACEFRAME PACKAGE:
Every approved Starfleet spaceframe assembly includes a standard set of structural and operational systems. For example: self-destruct and warp-core ejection mechanisms, lifeboat complement, Jeffries tube network, Bussard ramscoops, reaction control system, docking ports, and fluid handling systems. These and all other systems not specifically available for selection in this design program are automatically included in every starship design.