After repairs and upkeep at Ulithi in the western Carolines, from 21 January to 6 February 1945, "Swearer" joined a convoy of cargo and troopships bound for the invasion of Iwo Jima. The convoy stopped at Guam for a week, then headed for Iwo Jima on 6 February. "Swearer" and her convoy arrived off the island on 19 February, the date of the assault. For five days, she patrolled the transport area and helped fight off Japanese air attacks, before departing on the 23rd for Leyte Gulf in the Philippines.