The USS Uncas was a 192-ton screw steamer built in New York City in 1843. Acquired by the Union Navy during the American Civil War, she was intended for use as a gunboat to patrol waterways and prevent Confederate trade with foreign nations. Initially purchased on September 20, 1861, from Dudley Buck, the vessel underwent refitting at the New York Navy Yard from September 1861 to February 1862 and was placed in service in early March of that year. Before she could fully serve with the Coast Survey, the Union faced a significant threat when the Confederate ironclad CSS Virginia (commonly known as Merrimack) attacked the Union blockaders at Hampton Roads. In response, Uncas was dispatched to Hampton Roads by March 14, 1862, to bolster Union naval forces. Shortly thereafter, she was transferred to the North Atlantic Blockading Squadron. Her service was hampered by serious mechanical deficiencies, prompting repairs in Baltimore, Maryland. Her operational plans shifted when she was sent to the Gulf of Mexico, where she was to assist Flag Officer David Farragut's campaign against New Orleans. She entered the Mississippi River on April 10, 1862, to aid in locating positions for mortar boats during the bombardment of Forts St. Philip and Jackson. However, her machinery failed again, requiring further repairs before she could participate fully. After repairs, Uncas was assigned to the South Atlantic Blockading Squadron at Port Royal, South Carolina, arriving on April 29, 1862. She quickly demonstrated her combat capability by capturing the schooner Belle northwest of Charleston. Subsequently, she was assigned to blockading duties in Georgia’s St. Simon’s Sound and inland waters from St. Catherine’s to St. Andrew’s Sounds. Her first notable engagement occurred on September 1, 1862, when she and USS Patroon engaged Confederate forces at St. John’s Bluff, firing over 143 shells during a four-hour battle that resulted in damage to her upper works but a Confederate withdrawal. Uncas continued patrols and reconnaissance on the St. Johns River until March 1863 and participated in the occupation of Jacksonville, Florida. Deteriorating condition led her to Port Royal for repairs in June 1863, and she was subsequently ordered to New York for further overhaul. Stricken from the naval register and sold at auction in August 1863, the vessel was renamed Claymont in November 1863 and served as a merchant vessel until she was abandoned in 1886. Her service reflects the versatility and logistical challenges faced by Union naval forces during the Civil War.

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