The USAT John L. Clem was a versatile vessel with a rich service history, originally constructed as the Santa Ana, a passenger and cargo liner built in 1917 by William Cramp & Sons in Philadelphia. Designed for W. R. Grace and Company’s South American service, she measured approximately 4,869 gross register tons (GRT) and was 360.2 feet in length, with a breadth of 51.6 feet and a draft of 22 feet 9 inches. The vessel was exclusively oil-fired, equipped with four boilers powering a quadruple expansion steam engine, and could carry 100 first-class passengers along with 5,400 tons of cargo. Launched on October 13, 1917, and completed in January 1918, Santa Ana was requisitioned by the U.S. Shipping Board during World War I before her completion. She was briefly commissioned as USS Santa Ana (ID-2869) in 1919, serving as a troop transport for the Cruiser and Transport Force, making four voyages to repatriate WWI veterans from France. After decommissioning in July 1919, she resumed commercial service with Grace Line, operating between New York and Valparaiso, Chile, until 1928. In 1928, she was renamed Guatemala and shifted to Grace's intercoastal service between San Francisco and New York under the subsidiary Panama Mail Steamship Company. She was later renamed Santa Cecilia in 1932 and continued in intercoastal service until being laid up in 1934. Sold in 1936 to Merchants & Miners Transportation Company, she was rebuilt and renamed Irwin, operating along the Boston-Philadelphia coastwise route. In 1941, the U.S. Army acquired her, and she was renamed John L. Clem, serving as a troop transport during World War II. Between 1943 and 1944, she was converted into a hospital ship, designated USAHS John L. Clem, and participated notably in Operation Dragoon, transporting wounded in the Mediterranean theater. After VE Day, she was decommissioned, converted back into a troop transport, and later used to transport Jamaican workers before being laid up in 1946. She was sold for scrap in 1947, ending her multifaceted maritime career.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.