(My speculative design only)

 

Spec Info

OVERVIEW  
Designation Medium Cruiser (see Ship Designations)
Commission Dates 2228-2262
Crew 365
Ships Built/Remain in service 45 / 0
TACTICAL  
Weapons 4 Phaser Emitters, 2 Photon Torpedo Launchers (Stock 125)
Shield Strength 1.1
Offensive Power 6.6
OTHER STATS  
Maximum Cruising Speed Warp 5.7
Mass 688,000 metric tonnes
Length 280M
Decks 11

Starfleet vessel of the early 23rd century, officially designated as a standard Medium Cruiser. Being fairly well armed, to almost the degree of Destroyer, ships of the Ranger Class would be assigned to patrol the outer rim in various strategic locations. Certain research operations were part of its mandate also. Noted incidents involving vessels of this class included two ships which barely escaped in tact after a series of early hide-and-seek skirmishes with a Tholian vessel in the distant Botha Sector.

NAME OF VESSEL REGISTRY STATUS
USS Ranger 1 NX - 1416 D
USS Leviathan 1 NCC 1428 Sc
USS Mediator NCC 1438 Sc
USS Assurance NCC 1522 Sc
USS Kursk NCC 1419 D
USS Fearsome NCC 1493 PD
USS Excel 1 NCC 1422 Sc
USS Tolkien NCC 1460 Sc
USS Glorious NCC 1509 Sc
USS Harrier 1 NCC 1430 D

-Up to now, all registry numbers have been strictly sequential, as ships were constructed and coded using such a system. But from hereon, they become less coherent. This I've done deliberately, for, as the Federation began to expand and advance into the 23rd century, one must assume there was a natural increase in Construction Yards. So, for example, with this Ranger Class under a set construction line at perhaps a couple of yards, sequential ordering would've been curtailed due to other vessels of other classes being constructed and launched at other yards. So in this context, perhaps 30, 40, or even more ships of other classes would have been assigned their codes which may disorient the NCC numbering system of any one class. Because, as yards expand, construction technology and techniques improve, ships are launched much quicker, which in turn creates an overall plethora of mixed, non-sequential codes. In the example portrayed in my table above, 106 ships were commissioned throughout the Federation between the construction of the Ranger and the Assurance. This may have occurred over a period of a couple of years or so. (This may begin to explain the complete chaos of Constitution Class registries ;) Also, yards would invariably be involved in the construction of many ships of different classes at any one time.

KEY

O= Operational
OR= Operational after Refit or Repairs
DD= In Drydock for repairs or refit *
T= Training Vessel
U= Under construction prior to preliminary trials
D= Destroyed
Sc= Scrapped or Decommissioned
PD= Presumed Destroyed
M= Missing

*A ship would visit drydock for many reasons, including refits, repairs, servicing upgrades, preliminary trials and testing of new components, and spacedock for similar reasons, as well as crew rotation, reassignment, prep period before redeployment, and so forth.

As this class is only of my own speculation, all specs and stats appearing here are hypothetical. The explanations about this data, such as ship designations, weapons, offensive power etc, see Spec Definitions.