design by Morgan Donovan
NOTES:
Known Sphere Of Operation: Klingon & Triangle Border
Data Reliability: B
Major Data Source: Romulan Sector Intelligence
The T-21, introduced in mid-2277, was intended to be a “middle-ground” design between the T-5 and T-10 class destroyers. The T-21 was similar to the T-10 in that it had both beam and missile weapons. Unlike the T-10, though, the T-21’s primary missile weapon was the powerful RPL-3 plasma torpedo rather than the emerging photon torpedo systems found on the T-10.
The end result was a combat platform that had less overall firepower than the T-5 yet technically more than the T-10. Defensively, the T-21 was superior to it’s counterparts. Supporters of the T-21 within the Romulan Star Command were considered some of the more aggressive members of the Romulan military. Line commanders assigned to the T-21 soon developed a reputation for being extremely vicious in combat, using the massive firepower of the RPL-3 at point blank ranges to devastate enemy vessels. This tactic and led T-21 commanders to adopt the moniker of “Hhnoiykar-ait”, which was also a reference to the class name taken from a sub-species of hhoiyakar – or Romulan weasel. These rodents were known for a distinct vocalization before attacking their prey; they were also known for being bad tempered.
The Type-2, introduced in 2285, upgraded the primary impulse engines, main computer, weapons and shield system. The additional power from the enlarged impulse drive made the Type-2 even more dangerous.
The Type 1 and Type 2 remained in production until 2287, with a total of 25 produced. 1 Type 1 is known to have been destroyed. The remining 34 were eventually converted to the Type 3 model. The Type 3 significantly improved the beam weapon range and incorporated the heavier RPL-4 plasma torpedo. With improved shields and extra hull plating, the Type 3 was extremely popular with destroyer crews. Of the 34 fielded, 2 were destroyed and 1 was scrapped.
By 2350, the T-21‘s age was beginning to show, and designers quickly realized that an update would be necessary to ensure the ship continued to serve. The third generation R-5M was replaced with an fourth generation variant as were a number of support systems. While an improved RWC-2 was available, the decision to replace the nacelles and primary power plant with the RWI-1 was green lighted. The RWI system used the smaller micro-singularity plasma source which was proving more viable for the Empire. The Type 4 also incorporated the plasma missile system, replacing the large plasma torpedo from the Type 3.
A total of 31 Type 4s were eventually fielded. Many saw service during the Dominion War, with 6 destroyed, 7 scrapped and one listed as missing. The remaining 17 T-21 are in active service, but are expected to be retired shortly.
| Construction Data: | ||||
| Model Number — | Type 1 | Type 2 | Type 3 | Type 4 |
| Ship Class — | VI | VI | VI | VI |
| Date Entering Service — | 2277 | 2285 | 2300 | 2352 |
| Number Constructed — | 25 | 10 | Refit | Refit |
| Hull Data: | ||||
| Superstructure Points — | 14 | 14 | 18 | 26 |
| Damage Chart — | C | C | C | C |
| Size: | ||||
| Length — | 233.5 m | 233.5 m | 233.5 m | 233.5 m |
| Width — | 262.4 m | 262.4 m | 262.4 m | 262.4 m |
| Height — | 100.1 m | 100.1 m | 100.1 m | 100.1 m |
| Weight — | 67,603 mt | 70,028 mt | 76,913 mt | 79,507 mt |
| Cargo: | ||||
| Cargo Units — | 75 SCU | 75 SCU | 75 SCU | 75 SCU |
| Cargo Capacity — | 3,750 mt | 3,750 mt | 3,750 mt | 3,750 mt |
| Landing Capacity — | None | None | None | None |
| Equipment Date: | ||||
| Control Computer Type — | R-4M | R-5M | R-5M | R-5M |
| Transporters: | ||||
| Standard 9-person — | 2 | 2 | 2 | 2 |
| Emergency 20-person — | 2 | 2 | 2 | 2 |
| Cargo — | 1 | 1 | 1 | 1 |
| Cloaking Device Type — | RCC | RCC | RCC | RCC |
| Power Requirements — | 15 | 15 | 15 | 15 |
| Other Data: | ||||
| Crew — | 126 | 137 | 143 | 143 |
| Passengers — | 10 | 10 | 10 | 10 |
| Shuttlecraft — | 2 | 2 | 2 | 2 |
| Engines And Power Data: | ||||
| Total Power Units Available — | 35 | 40 | 40 | 34 |
| Movement Point Ratio — | 3/1 | 3/1 | 3/1 | 2/1 |
| Warp Engine Type — | RWC-2 | RWC-2 | RWC-2 | RWI-1 |
| Number — | 2 | 2 | 2 | 2 |
| Power Units Available — | 15 ea. | 15 ea. | 15 ea. | 11 ea. |
| Stress Charts — | N/Q | N/Q | N/Q | L/M |
| Max Safe Cruising Speed — | Warp 6 | Warp 6 | Warp 6 | Warp 8 |
| Emergency Speed — | Warp 7 | Warp 7 | Warp 7 | Warp 9 |
| Impulse Engine Type — | RIB-3 | RIE-1 | RIE-1 | RID-3 |
| Power Units Available — | 5 | 10 | 10 | 12 |
| Weapons And Firing Data: | ||||
| Beam Weapon Type — | RB-7a | RB-8 | RB-9 | RB-26 |
| Number — | 4 | 4 | 4 | 4 |
| Firing Arcs — | 2 f/p, 2 f/s | 2 f/p, 2 f/s | 2 f/p, 2 f/s | 2 f/p, 2 f/s |
| Firing Chart — | M | N | W | Y |
| Maximum Power — | 4 | 6 | 6 | 8 |
| Damage Modifiers: | ||||
| +3 | (1-3) | (1-4) | (1-8) | (1-20) |
| +2 | (4-9) | (5-9) | (9-16) | (21-22) |
| +1 | (10-14) | (10-13) | (17-20) | (23-24) |
| Torpedo Weapon Type — | RPL-3 | RPL-3 | RPL-4 | RPT-2 |
| Number — | 1 | 1 | 1 | 1 |
| Firing Arcs — | 1 f | 1 f | 1 f | 1 f |
| Firing Chart — | T | T | T | T |
| Power to Arm — | 8 | 8 | 12 | 4 |
| Damage — | RL-3 | RL-3 | RL-4 | 40 |
| Shield Data: | ||||
| Deflector Shield Type — | RSH | RSN | RSP | RSY |
| Shield Point Ratio — | 1/2 | 1/2 | 1/3 | 1/3 |
| Maximum Shield Power — | 11 | 15 | 18 | 28 |
| Combat Efficiency: | ||||
| D — | 69.0 | 80.0 | 108.2 | 149.7 |
| WDF — | 24.9 | 29.7 | 44.4 | 63.4 |