USS Bolster (ARS-38) was a Bolster-class rescue and salvage ship acquired by the U.S. Navy during World War II, the Korean War and the Vietnam War. Her task was to come to the aid of stricken vessels. Bolster was launched 23 December 1944 by Basalt Rock Company in Napa, California; sponsored by Mrs. C. A. Mayo, Jr., wife of Lieutenant Mayo, USNR; commissioned 1 May 1945, Lieutenant W. F. Lewis in command; and joined the U.S. Pacific Fleet.