The USS Carolina was a Federation starship in service during the late 24th century. During the late 2370s it was under the command of Captain Peterson.
In 2377, it was diverted by Admiral Owen Paris to intercept a Ferengi Marauder that was interfering with Project Pathfinder's communications with the USS Voyager.
At the time, the Marauder had created a geodesic fold, which it was attempting to lure Voyager through; an event that would have subsequently killed all aboard. Reginald Barclay suggested using the Carolina to close the fold, however, the ship was not equipped to perform such a task. (VOY: "Inside Man")
Background
While it is not stated that this Carolina is a different ship than the one from the 23rd century, this is quite likely, as no other starship has been seen to be in service for 110 years.
Based on the dialog, at maximum warp, the Carolina could travel 0.7 light years in two hours.