The USS T'Saura was an Antares-class science vessel in service to Starfleet in the mid 23rd century. As of 2269, it was commanded by Captain Sivok. In that year, the T'Saura was assigned to study an interdimensional rift within the Delta Triangle region recently discovered by the USS Enterprise, and to determine a way to safely enter and exit the anomaly, without suffering damage to the ship's dilithium crystals. They were later aided in this objective by the Corps of Engineers team aboard the USS Lovell.