As the Navy moved farther across the Pacific in the island-hopping campaign, "Hopkins" arrived off Saipan 13 June 1944 to sweep the invasion approaches. She provided screen and fire support for the amphibious landings of 15 June 1944. She picked up 62 prisoners from sunken Japanese ships as well as rescuing a downed fighter pilot and a seaplane crew. A brief rest at Eniwetok was followed by a role in the capture of Guam. "Hopkins" reached that important Marianas island 14 July to participate in the preinvasion sweeping and bombardment. She also gave fire-support to the landings 16 July.