USS t'Zahn
From Star Trek: Theurgy Wiki
The' USS t'Zahn was a 24th century Federation starship operated by Starfleet. After being promoted to lieutenant (senior grade), Natalie Stark transferred to the t'Zahn where she served as the operations officer of the Gamma shift.
In 2380, the t'Zahn was decommissioned and removed from the naval list.
(So far it hasn’t been revealed what class the USS t'Zahn was, but it was likely an older class of vessel that was being phased out in the post Dominion War Starfleet such as a Constellation or a Miranda class. The t'Zahn would have to be larger than an Oberth class because a full lieutenant would be chief operations officer on a ship that size rather than merely the Ops officer for Gamma shift.)
