The USS Orion (AS-18) was a submarine tender of the United States Navy, launched on 31 March 1943. Designed to support submarines, it provided maintenance, repair, and logistical support. The ship was named after the constellation Orion and played a crucial role during World War II and the Cold War. Commissioned on 15 December 1943, the USS Orion served in various locations, including the Pacific Theater. It was equipped with facilities for refueling, repairing, and supplying submarines, enhancing their operational capabilities. The ship was decommissioned in 1993, marking the end of its nearly 50 years of service.