design/concept by Paramount
| Construction Data: | ||||
| Model – | Mk I | Mk II | Mk III | Mk IV |
| Ship Class – | XI | XI | XI | XI |
| Date Entering Service – | 2245 | 2255 | 2262 | 2266 |
| Number Constructed – | 13 | 9 | 20 | Refit |
| Hull Data: | ||||
| Superstructure Points – | 28 | 28 | 28 | 28 |
| Damage Chart – | C | C | C | C |
| Size: | ||||
| Length – | 289 m | 289 m | 289 m | 289 m |
| Width – | 127 m | 127 m | 127 m | 127 m |
| Height – | 73 m | 73 m | 73 m | 73 m |
| Weight – | 175,645 mt | 173,495 mt | 177,880 mt | 178,115 mt |
| Cargo: | ||||
| Total SCU – | 340 SCU | 320 SCU | 450 SCU | 450 SCU |
| Cargo Capacity – | 17,000 mt | 16,000 mt | 22,500 mt | 22,500 mt |
| Landing Capacity – | None | None | None | None |
| Equipment Date: | ||||
| Control Computer Type – | M-3 | M-3 | M-4 | M-4 |
| Transporters: | ||||
| Standard 6-person – | 4 | 4 | 4 | 3 |
| Emergency 22-person – | 5 | 5 | 5 | 2 |
| Cargo – | 2 | 2 | 2 | 3 |
| Other Data: | ||||
| Crew – | 270 | 430 | 430 | 430 |
| Passengers – | 80 | 60 | 60 | 60 |
| Shuttlecraft – | 10 | 12 | 12 | 12 |
| Engines And Power Data: | ||||
| Total Power Units Available – | 36 | 36 | 44 | 48 |
| Movement Point Ratio – | 4/1 | 4/1 | 4/1 | 4/1 |
| Warp Engine Type – | FWC-1 | FWC-1 | FWF-1 | FWF-1 |
| Number – | 2 | 2 | 2 | 2 |
| Power Units Available – | 16 ea. | 16 ea. | 20 ea. | 20 ea. |
| Stress Chart – | O/M | O/M | G/L | G/L |
| Max Safe Cruising Speed – | Warp 6 | Warp 6 | Warp 6 | Warp 6 |
| Emergency Speed – | Warp 8 | Warp 8 | Warp 8 | Warp 8 |
| Impulse Engine Type – | FIB-2 | FIB-2 | FID-2 | FIE-2 |
| Power Units Available – | 4 | 4 | 4 | 8 |
| Weapons And Firing Data: | ||||
| Beam Weapon Type – | FL-6 | FH-3 | FH-3 | FH-3 |
| Number – | 6 | 6 | 8 | 8 |
| Firing Arcs – | 2 f/p, 2 f, 2 f/s | 2 f/p, 2 f, 2 f/s | 2 f/p, 2 f, 2 f/s, 2 a | 2 f/p, 2 f, 2 f/s, 2 a |
| Firing Chart – | H | W | W | W |
| Maximum Power – | 3 | 5 | 5 | 5 |
| Damage Modifiers: | ||||
| +3 | (-) | (1-10) | (1-10) | (1-10) |
| +2 | (1-4) | (11-17) | (11-17) | (11-17) |
| +1 | (5-7) | (18-20) | (18-20) | (18-20) |
| Beam Weapon Type – | FL-2 | FH-2 | – | – |
| Number – | 2 | 2 | – | – |
| Firing Arcs – | 2 a | 2 a | – | – |
| Firing Chart – | F | H | – | – |
| Maximum Power – | 2 | 3 | – | – |
| Damage Modifiers: | ||||
| +3 | (-) | (-) | – | – |
| +2 | (-) | (-) | – | – |
| +1 | (-) | (1-10) | – | – |
| Torpedo Weapon Type – | FAC-3 | FAC-3 | FP-1 | FP-5 |
| Number – | 2 | 2 | 2 | 2 |
| Firing Arcs – | 2 f | 2 f | 2 f | 2 f |
| Firing Chart – | H | H | L | R |
| Power to Arm – | 4 | 4 | 1 | 1 |
| Damage – | 12 | 12 | 10 | 16 |
| Shield Data: | ||||
| Deflector Shield Type – | FSG | FSN | FSN | FSO |
| Shield Point Ratio – | 1/1 | 1/2 | 1/2 | 1/3 |
| Maximum Shield Power – | 9 | 16 | 16 | 16 |
| Combat Efficiency: | ||||
| D – | 66 | 89 | 94 | 113.5 |
| WDF – | 17.2 | 45.2 | 55.2 | 65.4 |