High Quality Content by WIKIPEDIA articles! John L. Clem began her service life as the United States Navy troop transport USS Santa Ana (ID-2869). Between the wars she served as a commercial ocean liner under various names. In 1941 she was acquired by the U.S. Army and assigned the name USAT John L. Clem, about which time she was also briefly assigned a US Navy ID, AP-36. She did not serve with the Navy however, and spent most of the war as an Army transport until being converted into a hospital ship, the USAHS John L. Clem. Santa Ana, a 5,000 gross ton (8890 tons displacement) transport, was built in 1918 at Philadelphia, Pennsylvania by William Cramp and Sons, as a civilian passenger liner. She was taken over by the Navy upon completion and placed in commission in February 1919. As a unit of the Cruiser and Transport Force, she made four round-trip voyages to bring World War I veterans from France. USS Santa Ana completed this work in July 1919 and, later in that month, was decommissioned and turned over to the U.S. Shipping Board. Between the World Wars she operated commercially under the names Santa Ana, Guatemala, Santa Cecilia and Irwin.