The achievements of aircraft carriers in the British Royal Navy significantly affected the navies of other states, including the U.S. Navy. Coal transport Jupiter was converted into an aircraft carrier and named USS Langley. The carrier was used to refine technology and for training naval aviation pilots. The ship was later converted into an aircraft transportation vessel. In this new role, she actively participated in the war in the Pacific, transporting U.S. Air Force aircraft. On February 27, 1942, she was heavily damaged by Japanese aircraft and was later sunk by the ships of her own escort.