 Throughout that period, the ship also served as the fleet target repair and photographic ship, a vital auxiliary to the fleet's gunnery training in the 1920s.Employed at East Coast ports and operating areas, ranging from the Southern Drill Grounds to the Caribbean, "Antares", like other naval vessels, occasionally gathered oceanographic data in the course of her voyages; she re-plotted landmarks for range finder and compass calibration charts, furnishing the Hydrographic Office with data needed to complete the calibration chart of Culebra, Puerto Rico, during the fiscal year 1924.During this time period, "Antares" participated in fleet concentrations and maneuvers in Cuban waters and in the Panama Canal Zone.