Holotank

Holotanks were special laboratories on Federation starships primarily used by stellar cartography departments. The labs made use of extensive holography to display areas of space.

In 2371, Captain Jean-Luc Picard and Lieutenant Commander Data used the holotank on the USS to track the course of the Nexus. 

In 2375, Terri Letac met Autumn Bailey in the USS holotank to review the stellar cartography department's recent work. With the Swiftfire's latest patrol route the pair were able to compile a list of objects of interest near the ship's projected course for possibly further inquiry.