A 32nd-century Federation starship, the eleventh to carry the name Voyager, seen at Federation Headquarters when the USS Discovery arrives there in 3189.
The USS Voyager-J was an Intrepid-class starship of the 32nd century, the latest in a line going back to the ship Kathryn Janeway brought home from the Delta Quadrant. Its hull follows the general outline of the original, with detached nacelles of the kind made possible by programmable matter.
It is first seen in the Discovery episode Die Trying. When Discovery reaches the hidden Federation Headquarters after its jump of 930 years, the crew gather at the windows to look at the ships docked there, and the registry on Voyager tells them how many generations have passed.
The ship turns up again in fleet scenes in later seasons as one of the main vessels of the reduced Starfleet under Admiral Charles Vance.