The USS John Penn (APA-23) was an attack transport ship that served prominently with the U.S. Navy during World War II. Originally launched in 1931 as the SS Excambion by the New York Shipbuilding Company of Camden, New Jersey, she was part of American Export Lines' "Four Aces" fleet, which included SS Excalibur, SS Exeter, SS Excambion, and SS Exochorda. The vessel was acquired by the Navy on January 8, 1942, and commissioned on April 6, 1942, after fitting out and training. As a unique ship in her class, USS John Penn played a vital role in major wartime operations. She was initially prepared for Operation Torch, the North African invasion, where she transported troops, cargo, and equipment. From October 4 to 16, 1942, she loaded supplies and troops, then sailed from Hampton Roads on October 23 with Admiral Hewitt's Western Naval Task Force. She arrived off Mehdia, Morocco, on November 8, where she successfully unloaded troops and cargo despite facing enemy shore battery fire and heavy surf. She was attacked by aircraft during this operation but managed to defend herself effectively. After completing her mission, she returned to Norfolk. In January 1943, USS John Penn was redeployed to the Pacific Theater, arriving at New Caledonia via the Canal Zone. She participated in rescue operations, notably retrieving survivors from USS Chicago off Guadalcanal, and spent the next six months ferrying supplies and troops to Guadalcanal, supporting ongoing battles in the region. Her service was marked by her reclassification as APA-23 on February 1, 1943. Her wartime career ended on August 13, 1943, when she was torpedoed by Japanese aircraft off Guadalcanal. The attack caused the ship to catch fire and sink stern first at 9:50 p.m. Despite efforts to save her, only about 35 survivors were rescued. The ship's captain at the time was Harry William Need. USS John Penn was awarded one battle star for her service. Today, her wreck lies off Honiara and is a popular dive site, with her starboard side resting on the seabed at approximately 36 meters depth amid challenging currents.

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