Remaining at Ulithi, temporarily attached to ServRon 10, until a week before Christmas, 1944, "Arctic" provided working parties for various merchant ships and took on board supplies for issue to the fleet until she commenced a series of round-trip voyages from Ulithi to the Palau Islands; she conducted four such voyages from 18 December 1944 – 1 April 1945 to provision ships and shore installations at Kossol Roads, Peleliu, and Angaur. Touching at Saipan on 5 April, "Arctic" proceeded to Iwo Jima, where — from 9–12 April — she provisioned island forces, various units of the Pacific Fleet, and small craft.