USS Thagard (NCC-652) was a Gagarin-class science scout, then an Oberth-class science vessel, active in the 23rd and early 24th centuries. (Star Trek: Thagard: A History of the USS Thagard) As an Oberth-class science vessel, Thagard was upgraded and relaunched from the Thuruthelf Shipyards orbiting Andor. It completed trials on stardate 9585.02 (Earth date 2290) and was commissioned to the Seventh Fleet on Stardate 9622.1. Her commanding officers included: T'Cari (2290-?), Saul Abraham, John Baldwin, Alexandra German (?-2296), Matthew Black, Kris T. Klufas and David Reed.