The USS Quintillus (NCC-590) was a Hermes-class scout in service in the mid 23rd century.
Ensign Christopher Warren was posted to Quintillus in the 2240s and rose quickly through the ranks, though he failed to qualify for a heavy cruiser assignment. (Starfleet Supplemental Communiqué 1:9)
Quintillus 's mission commander in the 2260s was Commodore Richard Broughton. (Starship Farragut: "The Captaincy")
Under the command of Captain Christy, Quintillus was assigned to Task Force Four during the Kelvan War in 2285. (Orion Press: In Harm's Way)