Navigational log

A navigational log was a log of a starship's prior locations, movements and trajectories.

In 2153, after boarding a Xindi-Primate starship, the crew of the found that most of the ship's computer core – including its navigational logs – had been erased. 

In 2371, when the USS Voyager encountered a type-4 quantum singularity, in an attempt to escape it, they appeared to have returned to the singularity despite traveling 1.4 light years away from it. Tuvok declared that there might have been an error in the navigational logs. 

In 2373, the crew of the USS Defiant (2370) downloaded the navigational logs from a prior run into the ship's auto-pilot in an effort to exactly duplicate the ship's previous trajectory and travel back in time.