 "Shelton" was then assigned as a unit in the screen for Task Force 57 (TF 57) — composed of five carriers — and routed to Seeadler Harbor, Admiralty Island.After arriving there on 13 August, "Shelton" operated in the area until the following month when she was assigned to the Morotai Attack Force (TF 77).The DE was still off Morotai on 3 October in the screen for the escort carriers and when they were attacked by the Japanese submarine "RO-41" at location .