Following a brief period of shakedown training, the ship took on cargo and personnel at Port Hueneme, California, for transportation to the South Pacific. She departed the California coast on 12 December, and reached Espiritu Santo on 3 January 1944. On that same day, "Alnitah" reported to Service Squadron 8 for duty as an interisland transport. Among her ports of call were Guadalcanal and Florida Island, Solomon Islands; Espiritu Santo, New Hebrides; Treasury Islands; Russell Islands; Fiji Islands; Auckland, New Zealand; Nouméa, New Caledonia; Milne Bay, New Guinea; Ulithi, Caroline Islands; Tinian and Guam, Mariana Islands; and Okinawa.