Tranquility / Legends The Tranquility was a " Venator " - class Star Destroyer in the service of the Republic Navy during the Clone Wars , wherein it served as the flagship for Jedi General Luminara Unduli . In 22 BBY , the Star Destroyer was dispatched to Rodia in the aftermath of Trade Federation Viceroy Nute Gunray ' s capture by the Republic . Alongside General Unduli , Jedi Commander Ahsoka Tano , a contingent of the Grand Army of the Republic ' s 41st Elite Legion , and a division of Senate Commandos , the " Tranquility " was to transport Gunray from Rodia to the Republic capital of Coruscant , where he would stand trial for war crimes . Just as the " Tranquility " began its journey , it was accosted by Confederate Vulture droid starfighters and " Droch " - class boarding ships . Despite the efforts of the Star Destroyer ' s gunners , the boarding ships were able to pierce the " Tranquility " hull , deploying super battle droids alongside Asajj Ventress , a Confederate assassin tasked with freeing Gunray from Republic captivity . Although the Republic forces aboard the " Tranquility " were able to repel the battle droids , Ventress crippled the Star Destroyer by setting off explosives within its main reactor room . This , in addition to the betrayal of a member of the Senate Commandos , allowed Gunray to escape the detention level , flee the " Tranquility " , and return to Confederate space . After a lightsaber duel in the destroyed reactor room , Ventress escaped the " Tranquility " as well aboard one of its escape pods , joining the fleeing Gunray and leaving the Jedi and Republic Navy with a heavily damaged Star Destroyer . Description . Like all " Venator " - class Star Destroyers , the " Tranquility " retained dual command towers , escape pods , a lengthy dorsal flight deck , and a ventral docking bay for larger ships such as " Consular " - class frigates . The exterior of the vessel sported numerous turbolasers , the insignia of the Open Circle Fleet , and the red markings common to ships of the Republic Navy . The interior of the " Tranquility " had a high - security detention level with several cells that were all protected by energy shields capable of withstanding lightsaber strikes . These shields were controlled by panels on the bulkhead next to the cells . At the entrance to the detention level was a control panel that provided readouts on the " Tranquility " systems and status . The detention level could be accessed by turbolifts , or unconventionally via the " Tranquility " ventilation shafts . The main engine room had several vertical reactors with walkways stretching on different levels , providing access for onboard personnel . In addition , large pipes that carried fuel to the reactors ran along the ceiling of the engine room . History . Prisoner transport . The " Tranquility " was a " Venator " - class Star Destroyer in the service of the Republic Navy during the Clone Wars . During the conflict , the vessel acted as the flagship for Jedi General , Master Luminara Unduli . In 22 BBY , the " Tranquility " was dispatched to the Outer Rim world of Rodia in the aftermath of the capture of Nute Gunray , the viceroy of the Trade Federation and a leading member of the Separatist Council . Following a failed attempt to bring Rodia into the Confederacy of Independent Systems fold , the viceroy was captured by the Republic Senators Padmé Amidala and Onaconda Farr and Associate Planetary Representative Jar Jar Binks . The " Tranquility " , carrying a contingent of the 41st Elite Legion , was to collect Gunray from Rodia and transport him to the Republic capital of Coruscant , where he would stand trial for his war crimes . While the " Tranquility " orbited the planet , Clone Commander CC - 1004 , nicknamed " Gree , " led the 41st Elite Legion to the surface to relieve the senators of Gunray and take the Neimoidian into custody . The clone troopers were joined by General Unduli and Jedi Commander Ahsoka Tano , who had been dispatched by the Jedi High Council to ensure safe passage for the " Tranquility " . The Jedi and clones concluded business on Rodia , and the " Tranquility " received a complement of Senate Commandos led by Captain Faro Argyus , an undercover Confederate agent . With all of the viceroy ' s escorts in place , Gunray was ferried up to the " Tranquility " aboard a " Consular " - class frigate . The vessel docked in the " Tranquility " ventral docking bay , unloading Gunray and his Jedi and clone escorts . The Neimoidian was taken to the vessel ' s detention level and placed inside a laser - shielded holding cell , guarded by the Senate Commandos and Gree . As the " Tranquility " departed from Rodia ' s orbit , Unduli and Tano began their interrogation of Gunray . However , unbeknownst to both Gunray and the Republic forces aboard the " Tranquility " , the Confederate Head of State , Count Dooku , had dispatched Dark Acolyte Asajj Ventress to infiltrate the " Tranquility " and either rescue or kill Gunray in order to prevent him from leaking information to the Republic . Before the Star Destroyer was able to jump to hyperspace out of the system , Ventress arrived in Rodian space and ambushed the " Tranquility " with a squadron of Vulture droid starfighters . In addition to the Vulture droids , three " Droch " - class boarding ships headed for the Star Destroyer , and despite the attempts of the " Tranquility " gunners to shoot the attacking ships down , the craft lodged themselves in the cruiser ' s hull . As the boarding ships began to disgorge B2 super battle droids into the Star Destroyer ' s dorsal flight deck , the 41st Elite ' s Green Company engaged the invaders . The Republic unit was decimated , and the battle droids continued toward the detention level . As Republic forces under Unduli and Gree continued to combat the droids in the " Tranquility " corridors , Ventress , who had been aboard one of the boarding ships , entered the flight deck and sneaked into the " Tranquility " ventilation shafts . From these shafts , she was able to access the Star Destroyer ' s reactor room , where she planted numerous thermal detonators while avoiding the sight of 327 - T , a WED - 15 Treadwell droid that was inspecting the area . After planting the timed explosives , Ventress returned to the ventilation shafts and proceeded to the detention level . With the Republic forces believing that the initial Separatist attack had been repelled , Ventress was able to quickly overpower Tano and the Senate Commandos guarding the Viceroy and free Gunray from his holding cell . However , the Dark Acolyte ' s progress was quickly halted with the return of Unduli and Gree from the fight in the " Tranquility " corridors . Unduli joined Tano in her struggle against Ventress shortly before the Dark Acolyte ' s apparent surrender . Crippled . Ventress had no intention of surrendering to the Jedi , however , and her timed explosives went off . The reactor room was engulfed in flames as the thermal detonators destroyed the " Tranquility " engines , door and turbolift controls , and communication systems . The blast shook the entire vessel , allowing Ventress to escape the Jedi and flee to the ruined reactor room via a turbolift shaft . Unduli gave chase while Tano remained with Gree and Argyus to guard Gunray , who was returned to his cell . Ventress was able to ambush and overpower Unduli during a duel in the reactor room and nearly killed her after severing several large pipes from the ceiling . The pipes slammed to the floor , pinning Unduli ' s leg to the ground . However , Tano decided to disobey her orders and follow Unduli into the reactor room , and the Padawan was able to save the Jedi Master from Ventress and free her leg . Ventress , having distracted the Jedi away from Gunray , signaled Argyus via her wrist gauntlet . The captain received the signal and promptly killed his fellow commandos before opening fire on Gree . The clone commander attempted to return fire , but Argyus used Gunray as a living shield by pushing the viceroy between himself and the clone . Gree , unable to fire on enemy prisoners , instead entered into a brief fist fight with Argyus , but the combined forces of the traitorous Senate Commando and the viceroy knocked the clone unconscious . All obstacles removed , Gunray and Argyus fled to the " Tranquility " ventral docking bay , where they commandeered the " Consular " - class cruiser originally used to bring them aboard . With the " Tranquility " still crippled from the blast , the cruiser made an easy getaway . Ventress fled the reactor room after detonating several more explosives and made her way to the Star Destroyer ' s escape pod bays , where she killed several clone troopers before escaping the " Tranquility " in one of its lifepods . The " Tranquility " was later repaired at the Outer Rim Command Center , allowing Unduli and Tano to report their failure and the loss of Gunray to Jedi Generals Yoda and Anakin Skywalker . In the " Tranquility " war room , the four discussed the continuing pursuit of the viceroy by Jedi General Kit Fisto , who was able to track the stolen Republic ship via its homing beacon . Shortly afterward , Tano left the Star Destroyer before Unduli and the " Tranquility " departed Rodian space . Commanders and crew . As a vessel in the Republic Navy during the Clone Wars , the " Tranquility " was heavily crewed by clones . The captain of the vessel was a clone who was present on the bridge during the Confederacy ' s rescue of Viceroy Nute Gunray alongside other clone naval officer s who worked as gunners . As her flagship , the vessel was under the overall command of Jedi General Luminara Unduli , with Commanders Ahsoka Tano and Gree serving with her . With Gunray as a prisoner , the " Tranquility " received a complement of Senate Commandos , a security measure not commonly afforded away from Coruscant . The ship was patrolled by at least one WED - 15 Treadwell droid , designated " 327 - T . " The Treadwell droid was in the reactor room when Ventress planted her explosives , but was unable to spot her . He was later buried beneath rubble when the explosives detonated , only to be found by Unduli and Tano during their search for Ventress . Behind the scenes . The " Tranquility " first appeared in the 2008 , where it served as the setting for the episode titled " Cloak of Darkness . " The ship also appeared in the young readers book " " , and its damaged reactor room was a level in the 2008 video game " " , in which players could reenact the duel between Ventress and Unduli . The catwalks and columns in the " Tranquility " engine room were designed by the episode ' s creators to be an architectural nod to the gravity control room of the Super Dimensional Fortress from the .