(My basic 3D model design for this class, more here)

 

OVERVIEW  
Designation Medium Cruiser (see Spec Definitions)
Commission Dates 2256-2309
Crew 310
Ships Built/Remain in service 12 / 0
TACTICAL  
Weapons 5 Phaser Emitters, 2 Photon Torpedo Launchers (Stock 120)
Shield Strength 1.4
Offensive Power 9.8
OTHER STATS  
Maximum Cruising Speed Warp 7.2
Mass 881,500 metric tonnes
Length 258M
Decks 15

The Cardinal Class was a mid-range Medium Cruiser/Explorer. 12 vessels were built between 2256 and 2260. The last Cardinal, the Queensland, was retired from service in 2309. Her hull was broken up at 40 Eridani-A the following year.

NAME OF VESSEL REGISTRY STATUS
USS Cardinal 1 NX -1795 D
USS Dorien NCC 1799 Sc
USS Solak NCC 1800 D
USS Kingston NCC 1803 Sc
USS Astute 1 NCC 1808 D
USS Alexandra NCC 1801 PD
USS Charleston NCC 1803 Sc
USS Crusader NCC 1797 Sc
USS Tarawa NCC 47-B Sc
USS Cork NCC 1796 D
USS Langley NCC 1776 Sc
USS Queensland NCC 1802 Sc

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.