design/concept by Paramount
| Construction Data: | ||||
| Model Number — | 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 — | 288.6 m | 288.6 m | 288.6 m | 288.6 m |
| Width — | 127.1 m | 127.1 m | 127.1 m | 127.1 m |
| Height — | 72.6 m | 72.6 m | 72.6 m | 72.6 m |
| Weight — | 173,765 mt | 173,495 mt | 177,880 mt | 178,115 mt |
| Cargo: | ||||
| Cargo Units — | 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 | 4 |
| Emergency 22-person — | 4 | 4 | 4 | 4 |
| Cargo — | 3 | 3 | 3 | 3 |
| Other Data: | ||||
| Crew — | 270 | 430 | 430 | 430 |
| Passengers — | 80 | 60 | 60 | 40 |
| 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 Charts — | 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-5 | 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 — | 2 | 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 — | – | FH-2 | – | – |
| Number — | 9999999 | 2 | 9999999 | 9999999 |
| Firing Arcs — | – | 2 a | – | – |
| Firing Chart — | – | H | – | – |
| Maximum Power — | – | 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 — | 66.0 | 89.0 | 94.0 | 113.5 |
| WDF — | 14.4 | 45.2 | 55.2 | 65.4 |