USS Ajax (NCC-547) was a Saladin-class (Cochise-subclass) destroyer on active duty in Starfleet during at least the 23rd century. (Star Fleet Technical Manual) In the 2260s, Charles Boone -- formerly of the USS Monitor -- commanded Ajax. (Starship Ajax) Robert Wesley was Ajax's commanding officer before assuming command of the USS Lexington c. 2265. (Star Trek: Lexington) Janna Talmadge commanded Ajax during the 2290s. (Star Trek: Avenger: "Belonging"; Star Trek: Shadowstar Station: "Pomp and Circumstantial Evidence") Hayden Pope's ship assignment, prior to USS Avenger, was Ajax. ("Belonging")