Seleya The Seleya was a Vulcan combat cruiser that was in service with the Vulcan High Command in the mid - 22nd century . This ship was under the command of Captain Voris . Its standard crew complement was 147 . History . Before being assigned to the Vulcan Embassy on Earth , Sub - Commander T ' Pol was stationed on the " Seleya " as deputy science officer for over a year ; the vessel ' s chief engineer was Solin . In December of 2152 , the " Seleya " embarked on a mission to chart the thermobaric cloud s surrounding the Delphic Expanse . After several days , the ship ' s crew reported that the " Seleya " was caught in a subspace eddy and being pulled into the Expanse . That was the last transmission ever received from the ship ; the Vulcan vessel " Vaankara " was sent into the Expanse to search for it , but contact with that craft was also soon lost . The final transmission from the " Vaankara " depicted the crew behaving like animals , and murdering each other . ( ) In September of 2153 , discovered the fate of the " Seleya " ; having made it into the Expanse , the ship had entered an asteroid field to mine trellium ore and refine it into trellium - D , with which the ship ' s crew could line the vessel ' s hull and be protected against the anomalies generated by the spheres that littered the region . The ship ' s complement had quickly been driven insane by neurotoxic effects of the trellium , and the ship remained in the field , adrift . The " Seleya " was destroyed when " Enterprise " personnel , including T ' Pol , were forced to overload the ship ' s power grid in order to escape , with the loss of all hands . ( ) Although information about the " Seleya " was stored in the Xindi database aboard " Enterprise " , this was deleted ( along with the rest of the database ) shortly after the " NX " - class starship was seized by Triannon fundamentalists , later in 2153 . ( ) The fact that T ' Pol had been exposed to trellium aboard the " Seleya " led to her becoming addicted to the substance by early 2154 . ( ) Midway through that year , the Vulcan High Command briefly investigated the possibility that Archer had deliberately destroyed the " Seleya " . Evidence against him included the fact that despite spending several hours in the ship ' s auxiliary control room , he never attempted to access the internal sensor s or download the computer database . He was eventually found innocent , and the High Command saw no reason to investigate the matter further . ( ) Appendices . Background information . The " Seleya " was named for Mount Seleya on . ( " Impulse " text commentary , ENT Season 3 DVD ) The history of the " Seleya " , as established and explored in the third season of , was influenced by that of the " Vaankara " in the second season finale . Executive Producer Brannon Braga noted , " " We thought it would be cool to find one of those Vulcan ships that had vanished . " " ( ) In the final draft script of " Impulse " , the " Seleya " was initially described thus ; " " The once - proud vessel is listing , badly damaged by months of asteroid - impacts . The ship is dark , hull pocked and a large section of the ' warp ring ' has been ripped away . " " In order to film a scene in which away team members from " Enterprise " hazardously cross a beam in a corridor of the " Seleya " ( while being pursued by the ship ' s zombie - like affected Vulcan crew ) , the entire corridor set had to be built eight feet above ground level . An inventive strobing light effect also added to the corridor scenes . " " While we had grillworks for floors , " " remembered Production Designer Herman Zimmerman , " " the DP , Marvin Rush , put reflective mirror lighting under the floor that was moving all the time so you got the impression it was lit with strobe lights – it really wasn ' t , but it was in that direction : bright light / dark shadow , bright light / dark shadow . One of the good things about that was that it made it very mysterious , very horrific . " " ( ) Apocrypha . In the non - canon " " game , the " Seleya " was the name of T ' urell ' s Borg - assimilate d starship .