USS Pandora was a Soyuz-class tactical frigate on active duty in Starfleet during the late 23rd and early 24th centuries. (Jackill's Starfleet Reference Manual: Ships of the Fleet, vol. 1 [revised]) There are conflicting sources as to what the Pandora's registry should be. The first edition of Jackill's vol. 1 has it as NCC-5366 while a subsequent revision has it as NCC-1957, which would conflict with the Knox-class USS Atrevida.