Known to crews as the “lnexies,” Inexpugnable-class tactical command vessels are designed to serve as important pieces of a larger tactical puzzle. With dozens of the Rendili Hammerhead‑class cruisers protecting the same lines during the run-up to the Mandalorian Wars, fire-control coordination is a key concern. Enter the Vanjervalis Systems computer conglomerate, which proposes a colossal computer to be fitted to a Rendili warship frame. Using the native software codes in a Hammerhead-class cruiser, a single tactical command vessel can transmit commands instantaneously and simultaneously to as many as 64 Hammerhead-class cruisers, managing their combat systems from a single headquarters.
As much flying space stations as warships, the 3,100-meter-diameter Inexpugnable-class ships move slowly, safely defended by the dozens of cruisers in the vicinity. Helmsmen refer to the peculiar bridge configuration as the “wishing well” because it merges visual and electronic data by suspending holographic images over a transparent deck.
Adapting the proof-of-concept Swiftsure, the Republic produced less than half a dozen prototypes before the Mandalorians attacked in force. One, Courageous, is helmed by then-Captain Karath at the Battle of Vanquo. Even though he loses the Courageous in the escape from Serroco, he helps Rendili/Vanjervalis incorporate the knowledge gained into the refit of Swiftsure, his next command, which would become the template for the entire production model.
Tactical Fire: The Inexpugnable-class tactical command vessel is designed to function as a platform from which the actions of an entire fleet are coordinated. As a standard action, an Inexpugnable-class tactical command vessel can forego all attacks to provide tactical fire to all squares in a 2-square radius. All allied ships within this radius may move 1 square in any direction at the beginning of that ship’s turn.
Rendili Hyperworks Inexpugnable-class Tactical Command Vessel (CL 19)

Knights of the Old Republic, page 184.
Colossal (cruiser) capital ship
Initiative: −3; Senses: Perception +6
Defenses: Fort 55, Ref 15 (flat-footed 15) ; +14 armor
Hit Points: 2,050; DR: 20; SR: 150; Damage Threshold: 255
Speed: fly 3 squares (starship scale)
Ranged: 5 double turbo laser batteries +15* (see below) and
5 light turbolaser batteries +15* (see below) and
2 point-defense light laser cannon batteries +15 (see below) and
2 tractor beam battery +11* (see below)
Fighting Space: 2×2 (starship scale); Cover: total
Base Attack: +2; Grapple: 67
Abilities: Str 101, Dex 13, Con —, Int 21
Skills: Initiative −3, Mechanics +6, Perception +6, Pilot −3, Use Computer +12
Crew: 4,300 (skilled); Passengers: 2,000 (troops)
Cargo: 50,000 tons; Consumables: 2 years; Carried Craft: 144 Aurek tactical strikefighters; 24 Chela‑class starfighters; 24 Conductor‑class short‑haul landing craft; 6 Ministry‑class orbital shuttles; various support craft
Hyperdrive: ×2 (backup×10), navicomputer
Availability: Military; Cost: not available for sale (estimated value 70 million)
* Apply a −20 penalty on attacks against targets smaller than Colossal size.
Double turbolaser battery (5 gunners)
Attack: +15 (−5 against targets smaller than Colossal), Damage: 6d10×5
Light turbolaser battery (5 gunners)
Attack: +15 (−5 against targets smaller than Colossal), Damage: 3d10×5
Point-defense light laser battery (5 gunners)
Attack: +15, Damage: 3d10×2
Tractor beam battery (3 gunners)
Attack: +11 (−9 against targets smaller than Colossal), Damage: — (grapple +67)