"aegir" returned to the west coast of the united states on 11 september and was moored at the mare island naval shipyard. there, she furnished services to submarines awaiting decommissioning. "aegir" was placed out of commission, in reserve, at mare island on 18 october 1946. then in 1960 used as a maintenance ship at san diego pacresflt and then returned to mare island naval shipyard and remained there until her name was struck from the navy list on 1 june 1971. the ship was sold on 16 may 1972 to national metal and steel at terminal island, california, and scrapped.