USS Monitor
The USS Monitor (NCC-61826) was a Federation  starship operated by Starfleet during the mid-24th century.

In 2366, the Monitor and  were dispatched to the Romulan Neutral Zone to counter a possible Romulan sneak attack originating from a supposed cloaked Romulan base on Nelvana III. ()

In 2367, the Monitor was patrolling the Romulan Neutral Zone. The ship was named on the chart "Starfleet Operations-Sectors 21166-23079" on the  bridge. ( okudagram)

In 2369, the Monitor was patrolling the Romulan Neutral Zone. The ship was named on the chart "Starfleet Operations-Sectors 21538-23079"  in the Enterprise-D observation lounge. ( okudagram)

Appendices

Background information 
The class and registry were derived from the chart in "Brothers".

Apocrypha 
According to the Star Fleet Technical Manual, there was a   in service in the 23rd century with the registry NCC-1713.

In William Shatner's  The Return, the  was a modified  vessel with an all black hull coating that was specially built by Starfleet Intelligence, and was temporarily renamed Enterprise while mounting a direct offensive against the Borg/Romulan alliance at the . In a later novel of the series, the ship is stranded outside the galaxy and destroyed by the same entity that destroyed the robot ships launched in Kirk's era to the Kelvans' homeworld in the Andromeda Galaxy. The video game Star Trek: Legacy also portrayed the Monitor as a Defiant-class vessel.

In the video game Star Trek: Away Team, the  was a  explorer that was being assimilated by the Borg during one of the missions. The video game  also featured the USS Monitor as a Galaxy-class starship.

In the video game , if the USS Enterprise-D is destroyed in battle, Starfleet Command sends the USS Monitor to investigate the disappearance of the ship following an emergency distress call sent out by Data. Furthermore, if the player fails to stop Soran from destroying a sun, besides the Veridian star, Starfleet Command relieves the Enterprise-D of its mission and sends the Monitor to continue investigating Dr. Soran.

External link 
 

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Federation starships