Star Trek Expanded Universe
"While the Phoenix has been in service, we've secretly tested and burned at least twenty-four Phoenix-named ships in a short timespan. The latest one has shown the most non-explodey tendencies."
Captain Cid ("The Tiloniam System")

The USS Phoenix (NCC-65420-X) (or Phoenix-X) was a Prometheus-class starship with a working transwarp drive in the late 24th and early 25th century. It was the twenty-fifth starship to bear the name Phoenix after a freak two-year transwarp-testing phase in which its predecessors were destroyed one after the other. It was head of Task Force Epsilon, under the command of Starbase 55 and served both Starfleet and, occasionally, Section 31. (Star Trek: Phoenix-X)



In 2286, while the Earth was taken hostage by a ravenous Whale Probe, Section 31 was secretly able to dissect alien-coded schematics and components from it. Over the following 80+ years, Section 31 would have Starfleet Intelligence unsuccessfully decode the information. (Star Trek IV: The Voyage Home, "Experimentalism")

Sometime prior to 2367, Section 31 enlisted a small group of Starfleet Corps of Engineers, under the leadership of Admiral Theseus, to help break the code and develop the transwarp drive using components stolen from the Whale probe. Partial construction of a transwarp drive began on the USS Phoenix, but would be interrupted after a short stint in Cardassian territory where Captain Benjamin Maxwell would launch illegal attacks against the Cardassian Union. (TNG: "The Wounded", "Secret Occurrences")

Following that, development was moved to the Proxima Maintenance Yards, where, in a freak-two year experimental phase, twenty-three ships, each named Phoenix, were fitted with transwarp engines and destroyed during each test flight. It wasn't until the end of the line of Phoenix-ships that the engine was perfected and ready for final construction.

To take the project off Starfleet's radar, the final phase was extended over the following year. In 2370, the final transwarp engine was constructed on Earth in a secret underground bunker by the small group of Starfleet Corps of Engineers; while the Prometheus-class USS Phoenix-X ship itself was built in Cardassian territory in Section 31's attempt to start a working relationship with the Obsidian Order. After the engine was transported from Earth to Cardassian space and installed, the relationship fell through. ("The Recruited", "Mirrorlyness!", "Secret Occurrences")

The Phoenix-X may have been moved the Pakled homeworld, after this incident, according to Starfleet Corps Engineer Borne in "Secret Occurrences".

Night Gotens in Engineering aboard the Phoenix-X in 2374.

In 2374, the Phoenix-X was launched from the Beta Antares Shipyards, with Section 31-altered records stating it was built there. After one final "test" of a transwarp engine, the project was deemed a failure and put to rest. The Phoenix-X was then launched as a regular starship.

Admiral Theseus, through Section 31, and eventually Section 31 themselves, would enlist a special relationship with the crew and use their influence to have the crew keep the transwarp engine (which worked) a secret, to make available for Section 31's own personal missions. ("The Tiloniam System", "Experimentalism", "Departments", "The Tilonian System", "Forbidden Crossing, Part I")

The enlisted group within Starfleet Corps of Engineers that worked on the transwarp drive had a few aliases' including "Tech-Team", "Transwarp Research Team" and "X-Team".
The production and testing phase of the transwarp drives were also code-named and known as the "X-Project".

As a Prometheus-class starship, the Phoenix-X had the ability to be divided into three separate pieces in multi-vector mode. Each piece had warp capability, but not necessarily transwarp capability. Aboard the Phoenix-X, these pieces were called "vectors", derived from the title "multi-vector mode" - and each vector was numbered: Vector 1, Vector 2, and Vector 3. The ship was occasionally known to separate into these vectors for missions instead of emergency situations. ("The Nega'Jem, Part I") In some cases, certain vectors have been stolen from the ship without authorization. ("Crash Bandicoots", "Secret Shuttles, Part II", "Secret Occurrences")

Exchange program[]

In 2374, the USS Phoenix and the IKS Bochnah were initiated into the exchange officer program, in a way that took it a step further than its first incarnation with William T. Riker, the USS Enterprise and the IKS Pagh-- that way being, half the crews of each were exchanged. Several months later, the crew of the Phoenix was moved to the Phoenix-X, and the exchanged-Klingons were a part of that move. Lieutenant Commander Red was the only Bridge officer a part of the exchange program. ("The Tiloniam System", "Betrayal and Honour")

In 2378, the exchange program came to an end, but when both halves returned to their respective ships, they each found the quality of life more difficult. As such, the exchange program resumed and both halves returned to the others' ships. ("Destiny's Revenge, Part I, II & III")

In 2380, the exchange continued, unwavering, when the Bochnah was destroyed, the crew survived and replaced with the IKS B'Cnah. ("Forged in Something")

In 2386, both the Phoenix-X and B'Cnah became victims of a genetically enhanced tribble attack. More than three-quarters of the B'Cnah's crew were killed. ("Triple Tribble Sunday")

By the early 25th century, in the year 2410, the exchange program was seemingly over. ("Nightmare Anomaly", "The Xindi Paradox")


From 2367 to 2369, the Starfleet Corps of Engineers enlisted and destroyed 24 separate Phoenix-ships to perfect the transwarp engine, partially starting with the USS Phoenix and fully starting with the NCC-65420-A to the NCC-65420-W. The final and remaining vessel was Phoenix-X with the registry NCC-65420-X.

The NCC-65420-X ship took longer to develop, and in 2370, while in construction, the Phoenix-X was given the temporary registry NX-00001 for its experimental transwarp engine which was based on in part of the previous Phoenix-ships.

Before pre-launch, Pakled technician Kod, from a section of the Starfleet Corps of Engineers, mistakenly set the ship up with the false registry NCC-75948. ("Secret Occurrences")

This registry wouldn't be adapted to the ship until 2383, when noticed by Commander Seifer and Captain Cell. ("Life 2")

In 2390, the false registry was pointed out by Captain Aeris and was reset to NCC-65420-X. ("Into Harshness")


24th century[]

After its launch, in 2374, the Phoenix-X partook in a fleet engagement with a Borg cube, involving the USS Enterprise-E, the USS Xena, the USS Defiant, the USS Prometheus and several other ships. It bore witness to at least one vessel, part of the fleet, being destroyed in the aftermath of the Borg cube exploding. ("Jello Cubes")

Returning to Deep Space 9, the Phoenix-X and the Xena were put to task in tractor beaming the station to remove it from the Bajoran wormhole; a situation aided by a Cardassian gravitational probe within the wormhole, put there in an attempt to destroy it. ("Deep Space Not So Much")

Later, the Phoenix-X discovered the USS Voyager, when it inexplicably returned to the Alpha Quadrant. Q, appearing on the bridge of the Phoenix-X, found this to be premature, and sent the intrepid crew back to the Delta Quadrant. ("Find Voyager? No Problem")

The Phoenix-X was then ordered to Flortarios III by Admiral Cloud to utilize BOB in the successful interception of a smokescreen weapons trade deal between a group of Ferengi, led by Kehmeh and Wenk, and the Dominion, led by First Ruk'Tenon. ("Flortarios III")

After a knocked unconscious crew by Ragon and Kotah was stopped by the Captain, two fleets of Drai fused with intentions on attacking the Federation by a last Maquis cell were discovered to have been building in secret. The Phoenix-X was then sent with a small task force and a Klingon and Vulcan fleet to stop them. ("Cookies")

In the same year, a misguided Starfleet officer named Dawn Relic hijacked the Phoenix-X and set course to the Gamma Quadrant using the ship's experimental ultra-transwarp function. There, on a planet, the ship was split into its multi-vector-thirds and crashed landed on its surface, where the crew was forced to work together to get it back and operational. Dawn, having attempted to sell the Captain as a rare species to Professor Gast, was then confined to the Brig. ("Crash Bandicoots")

While attempting to traverse home, the transwarp engines broke down and deposited the ship in Dominion territory, where they and a Jem'Hadar warship became disabled within an anomalous purple cloud. Devising a way to use the cloud as a source of power, the crew worked to eject themselves free before another Jem'Hadar warship destroyed the cloud and the other ship inside. ("The Cloud Aloft")

In 2375, the Phoenix-X was sent to Flortarios III to patrol it against a Dominion invasion. ("Home, Parts I & II", "The Bajoran Trove")

First Mothballing[]

In 2376, Commander Avery followed up with his intent of revenge and had the Phoenix-X decommissioned. When Theseus discovered this, during the Gordarion-abducting crisis, he had the ship recommissioned in order to help save those abducted. ("Experimentalism")

24th century cont'd[]

In 2390, Captain Cell successfully initiated an anomaly in an attempt to see if he could view a future Phoenix-X from 2410. ("Nightmare Anomaly")

Destruction & rebirth[]

In 2397, Kruran attempted to run the Phoenix-X's transwarp drive through quantum slipstream, causing the ship to crash land and be destroyed upon a planet covered in ice. The crew were then transferred to the California-class USS Phoenix-Y. Hating the new ship, Commander Seifer employed Wayfar to transform the vessel back to a Prometheus-class and have the registry reverted to its previous ship letter. ("Reverse Metallurgy")

24th century cont'd[]

In 2398, the Phoenix-X and the Roltekk were tricked into becoming the lure to reveal several Horace T. Mudd androids on Miranda-class ships. When they showed themselves, Mudd was quick to remote-hijack his android's ships and self-destruct them. ("I Ain't Callin' You a Truther")

Night Seifer and Kugo aboard the Phoenix-X in 2394.

Following into the 25th century, the Phoenix-X presumably encountered the same molecular reversion field that Andrea Reynolds and several others did, in "Delta Recruit", sometime before 2409, the crew lost their memories and re-took Starfleet Academy as to explain why they are still active in the 25th century. This event also syncs up the ship with the gameplay of Star Trek Online.

25th century[]

In 2410, the Phoenix-X was in command by Captain Oroku Seifer and again crewed by the same personnel from the 24th century (excluding the Klingon Defense Force-exchange officers), having retaken Starfleet Academy. ("Nightmare Anomaly", "Delta Recruit"), "Teaching the Next Generation")

When the ship was disabled by an anomalous energy field, the crew used an inverse tachyon pulse to reveal the anomaly was being caused by Captain Cell of the Phoenix-X from 2390, and Captain Ensign Dan from an alternate-future-Phoenix-X from 2450. ("Nightmare Anomaly")

While at Deep Space 9, the Phoenix-X underwent modifications to its deflector, accidentally sending the ship to tribble space upon meeting the Bajoran wormhole. There, Seifer lied to Troblor about the success of tribble in the prime universe and was promptly returned to the prime universe, unknowingly bringing back a spaceborne tribble. ("The New Frontier")

After taking aboard the criminal Avery, the entire crew of the Phoenix-X fell victim to an undead-like viral infection. ("STO Halloween")

Second Mothballing[]

Later in 2410, the Phoenix-X would be decommissioned at Earth Spacedock, but not totally dead, after being hit twice by Breen energy dissipators while attempting to deal with black hole clusters created by the Nibiru. The decommissioning put Oroku Seifer in a holding pattern aboard Spacedock where he took temporary command of station security. ("Nibiru", Earth Spacedock)

26th century[]

Sometime in the 26th century, the Phoenix-X, still in operation, but unrecognizable from refits, encountered a past version of itself. Its commanding officer, Captain Siken, questioned the past ship and Captain Cell proceeded to lie to him about who they were. ("Temporal Doom! Part II")

Multi-vector mode[]

Vector 1/Alpha[]

Vector 1/Alpha of the Phoenix-X

Vector 1 was the top portion of the ship. Of many other rooms, it contained the Bridge, the Captain's Ready Room and the Conference room.


The Bridge was the command center of the ship where communications and combat were coordinated. Sections included tactical, stationed by Armond, and helm, stationed by Red.

Ready room[]

The Ready room was the Captain's office, located next to the Bridge.

Conference room[]

The Conference room was located adjacent to the Bridge, on Deck 1. Senior staff would hold meetings in there frequently, as well as emergency meetings during situations of crisis.

This room was previously referred to as an Observation lounge.

Mess Hall[]

The Mess Hall was served as a common food court and lounge for the crew.

This room was previously named the Bar and Lounge. It was mistakenly mentioned as being on Deck 8, although it is more likely on an upper deck.

Vector 2/Beta[]

Vector 2/Beta of the Phoenix-X

Vector 2 was the middle portion of the ship. It contained Engineering and was the only vector to maintain transwarp functionality when all three vectors were separated.

Battle Bridge, Vector 2/Beta[]

The second Battle Bridge was an auxiliary command center for the second Vector.


Engineering contained the Warp/Transwarp engine which propelled the ship. Most engineers worked here under the command of Lieutenant Commander Kugo.


Sickbay was the medical center, under the care of Doctor Lox, who was known to have EMH work with him regularly. Many unapproved experiments were also executed in Sickbay by Lox.

Vector 3/Gamma[]

Vector 3/Gamma of the Phoenix-X

Vector 3 was the bottom portion of the ship. It contained a control room which handled the cloaking device and would maintain cloaking ability for the vector alone when all three vectors were separated. This vector was used outside of its emergency mode on several occasions and would often be the choice for missions or unauthorized separation.

Battle Bridge, Vector 3/Gamma[]

The second Battle Bridge was an auxiliary command center for the third Vector. Seifer commanded Vector 3 from here when he stole it from the rest of the ship, in 2376, and was sent back in time. ("Secret Shuttles, Part I", "Secret Occurrences")

See also[]

See also: Battle arena


The transwarp drive was the base-technology installed aboard the Phoenix-X in 2370 at an in-kind Cardassian space station, after all previous Phoenix-ships were destroyed in test trials. ("The Recruited"; "Secret Occurrences")

In 2382, Berlinghoff Rasmussen's temporal drive was installed on the USS Phoenix-X where they would be sent on a mission to the future to recover Agent Rave. When the Phoenix-X returned, the drive was uninstalled and returned to Section 31. ("Displacement Syndrome")

In 2383, Section 31 ordered the secret installation of transphasic torpedoes onto the Phoenix-X through the same secret Cardassian space station. ("Transphasic Meltdown")

In the same year, a phasing cloaking device based on the one installed on the USS Pegasus was ordered installed aboard the Phoenix-X by Section 31 under the guise of Starfleet Intelligence. It was soon found to be sabotaged, trapping the Phoenix-X in an asteroid at Regula I, and was uninstalled after the ship escaped. ("These Aren't the Voyages...")

By the year 2390, the Phoenix-X's transphasic torpedo load ran out during a battle with an old man named Mudd. ("Into Harshness")

Whether this was Harcourt Mudd or a relative was not specified.

Auxilliary craft[]

Command crew[]

Crew of the Phoenix-X in 2386.

See also: USS Phoenix (NCC-65420-X) personnel

Task Force Epsilon[]

In 2375, the Phoenix-X was placed in command of a small seven-ship squad. The squad was posted in the Flortarios sector to protect against the Dominion threat. The war soon ended in the same year. ("Home", "The Bajoran Trove")

In 2390, several ships from the squad were attacked and nearly destroyed by divergent Hirogen, requiring those ships to be re-launched as different classes. The Phoenix-X took command of those ships, under the title Task Force Epsilon, and with the help of Task Force Zeta, confronted the Hirogen. ("Into Harshness", "For the World is Worldly and Such")

Alternate Phoenix-Xs[]

In an alternate 2400, two crew members from the Phoenix-X traveled to a future where Section 31 had taken over the Federation and the Phoenix-X was part of a rebellion against the new organization. ("Secret Shuttles, Part IV")

In a parallel universe, known as the gender-bent universe, where all male and female genders of the prime universe were switched, Seifer and Kayl were accidentally transported to its Phoenix-X. They assisted their counterparts in saving themselves from an angry, alternate-gendered DaiMon Cide, named Cida. ("The New Frontier, Part II")

In an alternate 26th century, in which Vosk wiped out Daniels' faction in the 31st century, the Phoenix-X was still in service and was commanded by Captain Siken. The ship had enough refits that it looked nothing like a Prometheus-class starship. Siken, in the 2550s, encountered the time-traveling Phoenix-X from the 24th century. Siken also successfully scared off the bullying Lethean starship, Mikonikoff, at which point Captain Cell warned of an upcoming invasion by a trans-dimensional species called the Sphere Builders. ("Temporal Doom! Part II")

The 24th century Phoenix-X visits from the original timeline in which Vosk and the Na'kuhl never overcame Daniels' faction in the 31st century. (ENT: "Storm Front")

Borg-infested universe[]

In 2390, the Phoenix-X of the universe infested by Borg (seen in TNG: "Parallels"), on a mission to free Borg drones from the collective, is successful in freeing the Prime universe crew of the USS Hijinx. ("Hijinx")

In 2410, in an attempt to evacuate an entrapping layer of subspace, the Prime Universe Phoenix-X fired an inverse tachyon pulse which happened to converge with two other pulses from other timelines. One of the others was from the Borg-infested universe future Phoenix-X in which Ensign Dan was Captain. ("Nightmare Anomaly")

Memorable quotes[]

"Damn you Phoenix-X! Now the Vulcan's aren't the clown-like outgoing race we all knew them to be! And we're Section 31... we know all the changes to the timeline."
Elena, "Forbidden Crossing, Part I"


Ships commissioned[]

Background information[]

  • The class of the Phoenix-X, as based on the Prometheus-class starship, wasn't revealed until the Season 1 episode "Cookies". The class wasn't named as a Multi-Vector-class starship until the Season 3 episode "New Beginnings". The class would be revealed as being a Prometheus-class starship all along, and as being previously mislabeled by a Pakled engineer, in the Season 4 flashback episode "Secret Occurrences".
  • The history of the ship would periodically be adjusted throughout the run of the series and posted on the website. Its history wasn't clearly explained in the early episodes. The Phoenix-X's actual connection to any sort of secrecy wasn't clearly explained until "Experimentalism". Its connection to Section 31 wasn't explained until the third season.

External links[]