Andromeda class

The Andromeda-class was a type of Federation starship in use in the 24th century, and was classified as an explorer. 

Known vessels

 * USS Prokofiev (NCC-68814)
 * USS Drake (NCC-70956) (NCC-70956)

Apocrypha
The Ship Recognition Manual, Volume 1: The Ships of Starfleet, published by Last Unicorn Games after losing their Star Trek license, classifies the Andromeda-class as an explorer which entered service in 2362. The sourcebook also lists the USS Kalvos (NCC-68924) as being a ship of this class.