USS Opportune (ARS-41) was a Bolster-class rescue and salvage ship acquired by the U.S. Navy during World War II. Her task was to come to the aid of stricken vessels. Opportune was laid down 13 September 1944 by Basalt Rock Company in Napa, California; launched 31 March 1945; sponsored by Mrs. Kenneth Sanger; and commissioned at Mare Island, California, 5 October 1945, Lt. Comdr. Charles L. Knopp in command.