Complex sentence: She was transferred to the National Defense Reserve Fleet, James River Group at Ft. Eustis, Virginia, where she remained until January of 1959, when the ship was transferred to the Maritime Administration at the same location.
Split into simpler sentences: She was transferred to the National Defense Reserve Fleet, James River Group at Fort Eustis, Virginia. In January of 1959, the ship was transferred to the Maritime Administration at the same location.