USS Constellation (NCC-1974)

The USS Constellation (NCC-1974) was a Constellation-class starship in service in both the 23rd and 24th centuries, and the prototype for the Constellation-class.

In 2293, the Constellation still held an NX registry number as it completed certification trials. 

Fresh from the Academy, Dr. James Maxwell joined the Constellation medical team as assistant chief medical officer in 2344. Dr. Jason Hargreaves was his superior. (Star Trek: New Frontiers)

The Constellation arrived at Deep Space 9 in 2371 to ferry a Jem'Hadar child to Starfleet for study. 

In 2374, the ship assisted the USS Defiant, searching for survivors from the USS Honshu, which was attacked by the Cardassians during the Dominion War.