The SS San Jacinto was an American passenger-cargo vessel constructed in 1903 by the Delaware River Iron Ship Building and Engine Works in Chester, Pennsylvania, for the Mallory Line. Designed primarily for commercial service, the ship measured approximately 635 nominal horsepower with original engines rated at 27.5-41.5-70 by 42 inches, later replaced in December 1921 with two Hooven-Owens-Rentschler engines of 23-39-66 by 42 inches, producing 564 nhp. This overhaul was part of a general repair at Tietjen & Lang, New Jersey, costing around $100,000. During World War I, the San Jacinto was chartered by the United States Army, serving as a passenger-cargo ship. Although the U.S. Navy considered acquiring her and assigned her the identification number ID-1531, the vessel remained under Army control and was never commissioned as USS San Jacinto. Her service during the war included a notable incident in July 1918, when she collided with the U.S. Navy cargo ship USS Oosterdijk in the North Atlantic. Both ships sustained serious damage; Oosterdijk was abandoned and sank on July 10 or 11, after being damaged on either of those days, while San Jacinto managed to carry Oosterdijk's crew to Halifax, Nova Scotia. Post-collision, she was repaired and returned to Army service for the duration of the conflict. San Jacinto's maritime history took a tragic turn during World War II. On April 22, 1942, she was spotted by the German U-boat U-201. After a 12-hour pursuit, the U-boat torpedoed her at 03:29 hours, causing her to sink. Of her crew and passengers—comprising officers, crewmen, and passengers including women and children—14 were killed. The survivors, having tied their life-rafts together, waited until dawn before radioing for help and were rescued by USS Rowan (DD-405). The SS San Jacinto remains a notable example of early 20th-century American maritime design, serving through both World Wars and witnessing significant wartime events.

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