On 8 October, "Sederstrom" resumed her escort mission. Initially screening a Pearl Harbor-Ulithi convoy, she spent the period November 1944 to mid-February 1945 screening naval auxiliaries, escort carriers, and merchant ships between Eniwetok and Ulithi. In late February, she made a run into the Marianas; and, in March, she escorted reinforcements and supplies to Iwo Jima. From the 5th to the 11th, she patrolled off that island; and, on the 12th, she joined TU 51.29.19 and returned to Ulithi to stage for the Okinawa campaign.