The Odyssey class was a type starship introduced by the Federation Starfleet in the early 25th century. Designated as an explorer or star cruiser type vessel, the class had several configurations which focused on either tactical, science or operations functions.
Like the older Galaxy-class, the Odyssey class was able to separate its primary hull from secondary hull, providing the stardrive section with greater maneuverability once the chevron was away. The Odyssey class was also equipped with quantum slipstream drive. (Star Trek Online)
One variant of the operations configuration was in service by 2430 as a carrier. It was designed in an attempt to counter Klingon and Hydran fleet carriers of the era. The prototype of the carrier version was the flagship of Task Force 17 when it was launched in 2430. (Star Trek: United Federation of Munchkin Amazons)