Avenger Class XI Heavy Frigate

«Last Updated on December 27, 2023 »

design/concept by Aridas Sofia and John Trotta (based on a Reliant prototype by Mike Minor)

 
NOTES:
One of the most dynamic and militant of the Miranda variants, the Avenger class of heavy frigate was originally intended to provide a combat platform that could patrol the Klingon and Romulan Neutral Zones and engage enemy squadrons with sufficient power and combat capability to survive the encounter.

The Avenger class was originally intended to be a new-build production variant of the recently launched Miranda class. The design, like many of the Miranda variants, was intended to be easily converted and upgraded, with ships being able to take on the role of research vessel, explorer and combat patrol with minimal refit time. The Avenger build was to begin in later 2275 or early 2276; however the Kzinti incursion of 2272 forced an acceleration of plans for the new Avenger class and the decision was made to modify Surya class frigates to form the Avenger class.

The Avenger is the lest flexible of the Miranda variants. Spaces designated for research facilities and scientific equipment were mostly re-appropriated for troop support and combat subsystems. Combat shielding was a significant requirement for the Avenger, with the Mk I fielding the efficient FSP shield. Further internal space was dedicated to the large FIE impulse drive. Oversized landing bays and shuttle/fighter storage also reduced internal volume further limiting the space available for science and exploration equipment. With the addition of multiple combat transporters, the Avenger class’ capabilities as a exploratory vessel were reduced to that of an escort or transport.

Its role as a combat frigate was unquestioned, however, and command of these vessels was popular among many in Star Fleet. In 2284, eight Avengers were refit to the endurance class, returning some exploratory subsystems to the platform; meanwhile the Mk II Avenger was also fielded, with increases in firepower. Miniaturization of some key components allowed the increase to recreation facilities and replacement of several sensor systems, giving the Mk II more flexibility in it mission role.

Two years later, an even more powerful Avenger, the Mk III was fielded. Procurement felt that several Avengers should have the additional power and combat firepower brought by the FMH-8 heavy weapon system. With additional impulse power from the larger FIG-1, the Mk III was exclusively used along the Klingon boarder.

After the destruction of Praxis, some called for the remaining Avenger vessels to be retrofitted to the Miranda or Endurance specification. However, the Tzenkethi conflict ensured that the Avenger would once again be refit. While the conflict ended before the Mk IV was commissioned, the ongoing conflict between the Klingon and Cardassians meant that several Avengers were detailed to the region.
 

Construction Data:
Model – Mk I Mk II Mk III Mk IV Mk V Mk VI
Ship Class – XI XI XI XI XI XI
Date Entering Service – 2275 2284 2286 2298 2351 2360
Number Constructed – 22 Refit Refit Refit Refit Refit
Hull Data:
Superstructure Points – 38 38 38 40 48 56
Damage Chart – C C C C C C
Size:
Length – 234.9 m 234.9 m 234.9 m 234.9 m 234.9 m 234.9 m
Width – 141.2 m 141.2 m 141.2 m 141.2 m 141.2 m 141.2 m
Height – 58.8 m 58.8 m 58.8 m 58.8 m 58.8 m 58.8 m
Weight – 168,451 mt 175,878 mt 176,040 mt 179,465 mt 165,014 mt 179,670 mt
Cargo:
Total SCU – 300 SCU 300 SCU 300 SCU 300 SCU 300 SCU 300 SCU
Cargo Capacity – 15,000 mt 15,000 mt 15,000 mt 15,000 mt 15,000 mt 15,000 mt
Landing Capacity – None None None None None None
Equipment Date:
Control Computer Type – M-6A M-7 M-7 M-7a I-6 I-7
Transporters:
Standard 6-person – 3 3 3 3 3 3
Combat 20-person – 7 7 7 7 7 7
Emergency 22-person – 3 3 3 3 3 3
Cargo – 3 3 3 3 3 3
Other Data:
Crew – 360 360 360 360 360 360
Troops – 250 250 250 250 250 250
Passengers – 40 40 40 40 40 40
Shuttlecraft – 37 37 37 37 37 37
Engines And Power Data:
Total Power Units Available – 68 72 76 76 86 86
Movement Point Ratio – 4/1 4/1 4/1 4/1 5/1 5/1
Warp Engine Type – FWG-1 FWG-1 FWG-1 FWG-1 FNWD-2b FNWD-2b
Number – 2 2 2 2 2 2
Power Units Available – 26 ea. 26 ea. 26 ea. 26 ea. 27 ea. 27 ea.
Stress Chart – D/F D/F D/F D/F C/D C/D
Max Safe Cruising Speed – Warp 8 Warp 8 Warp 8 Warp 8 Warp 8 Warp 8
Emergency Speed – Warp 10 Warp 10 Warp 10 Warp 10 Warp 9 Warp 9
Impulse Engine Type – FIE-3 FIF-3 FIG-1 FIG-1 FIJ-4 FIJ-4
Power Units Available – 16 20 24 24 32 32
Weapons And Firing Data:
Beam Weapon Type – FH-10 FH-11 FH-11 FH-11 FNH-15 FNH-15
Number – 6 6 6 6 6 6
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 f/p, 2 f, 2 f/s 2 f/p, 2 f, 2 f/s 2 f/p, 2 f, 2 f/s
Firing Chart – W Y Y Y W W
Maximum Power – 7 10 10 10 15 15
Damage Modifiers:
+3 (1-10) (1-10) (1-10) (1-10) (1-7) (1-7)
+2 (11-17) (11-17) (11-17) (11-17) (8-15) (8-15)
+1 (18-20) (18-24) (18-24) (18-24) (16-20) (16-20)
Beam Weapon Type – FMH-3 FMH-5 FMH-8 FMH-8 FMH-10 FMH-11
Number – 2 2 2 2 2 2
Firing Arcs – 2 f/a 2 f/a 2 f/a 2 f/a 2 f/a 2 f/a
Firing Chart – O W S S V X
Maximum Power – 14 15 20 20 28 30
Damage Modifiers:
+3 (1-6) (1-10) (1-8) (1-8) (1-10) (1-7)
+2 (7-10) (11-17) (9-14) (9-14) (11-16) (8-15)
+1 (11-14) (18-20) (15-18) (15-18) (17-21) (16-22)
Torpedo Weapon Type – FP-5 FP-4 FP-4 FP-9 FP-11 FP-12
Number – 4 4 4 4 4 4
Firing Arcs – 2 f, 2 a 2 f, 2 a 2 f, 2 a 2 f, 2 a 2 f, 2 a 2 f, 2 a
Firing Chart – R S S R S S
Power to Arm – 1 1 1 1 1 1
Damage – 16 20 20 28 30 38
Shield Data:
Deflector Shield Type – FSP FSS FSS FSQ FST FNSQ
Shield Point Ratio – 1/4 1/4 1/4 1/4 1/4 1/5
Maximum Shield Power – 16 20 20 30 45 41
Combat Efficiency:
D – 174.3 184.3 190.3 209.2 230.6 262.6
WDF – 101 143.6 145 161.8 197.8 226.2