USS Choctaw was a large (1,004-ton) steamer built for the merchant service, but acquired by the Union Navy during the second year of the American Civil War.
The first USS Undine was a "tinclad" steamer in the United States Navy in 1864, during the American Civil War. She was captured on 30 October and put in service with the Confederates, but was not renamed before being burned, 5 days later, to prevent re-capture.
The third USS Water Witch was a wooden-hulled, sidewheel gunboat in the United States Navy during the American Civil War. She is best known as the ship fired on by Paraguay in 1855. In 1864 she was captured by the Confederate States Navy, and subsequently was taken into that Navy as CSS Water Witch.
USS Marblehead was a Unadilla-class gunboat built for the United States Navy during the American Civil War.
USS Agawam was a double-ended, side-wheel gunboat of the United States Navy that served during the American Civil War. She measured 974 tons, with powerful rifled guns and a very fast speed of 11 kn. She served the Union Navy in the Union blockade of the rivers and other waterways of the Confederate States of America.
USS Saugus was a single-turreted Canonicus-class monitor built for the Union Navy during the American Civil War. The vessel was assigned to the James River Flotilla of the North Atlantic Blockading Squadron upon completion in April 1864. The ship spent most of her time stationed up the James River where she could support operations against Richmond and defend against a sortie by the Confederate ironclads of the James River Squadron. She engaged Confederate artillery batteries during the year and later participated in both attacks on Fort Fisher, defending the approaches to Wilmington, North Carolina, in December 1864–January 1865. Saugus returned to the James River after the capture of Fort Fisher and remained there until Richmond, Virginia was occupied in early April.
USS Vindicator was a 750-ton steamer acquired by the U.S. Navy and put to use by the Union during the American Civil War.
USS Monarch was a United States Army sidewheel ram that saw service in the American Civil War as part of the United States Ram Fleet and the Mississippi Marine Brigade. She operated on the Mississippi River and Yazoo River during 1862 and 1863.
CSS Chattahoochee was a twin-screw steam powered gunboat built at Saffold, Georgia; she was christened for the river upon which she was built. The gunboat entered Confederate States Navy service in February 1863.
USS Rachel Seaman was a wooden schooner purchased by the Union Navy during the American Civil War.
USS Winona was a Unadilla-class gunboat built for service with the Union Navy during the American Civil War. Winona was heavily armed, with large guns for duels at sea, and 24-pounder howitzers for shore bombardment. Winona saw significant action in the Gulf of Mexico and in the waterways of the Mississippi River and was fortunate to return home safely after the war for decommissioning.
USS Dai Ching was a steam gunboat in commissioned into service in the United States Navy in 1863. She served in the Union Navy during the American Civil War until her loss in 1865.
USS Clifton was a shallow-draft side-wheel paddle steamer, built in 1861 at Brooklyn, as a civilian ferry. The Union Navy bought her early that December, and commissioned her after having her converted into a gunboat. In 1863 she ran aground, was captured and commissioned into the Texas Marine Department. Her career ended in 1864 when she ran aground and her Confederate crew burned her to prevent her recapture.
USS Maumee was a steamer purchased by the Union Navy during the American Civil War. With her heavy guns, she was planned by the Union Navy for use as a bombardment gunboat, but also as a gunboat stationed off Confederate waterways to prevent their trading with foreign countries.
USS Underwriter was a 341-ton sidewheel steamer that was purchased for military use by the Union Navy during the American Civil War.
USS Calhoun was a captured Confederate steamer and blockade runner acquired by the Union Navy from the prize court during the American Civil War.
USS Ouachita was a steamer captured by the Union Navy during the American Civil War. She was used by the Navy to patrol navigable waterways of the Confederacy to prevent the South from trading with other countries.
USS Mingoe was a large double-ended, side wheel, ironclad steamer gunboat commissioned by the Union Navy during the American Civil War. With heavy guns and a very fast speed of 11 kn, the ship was intended by the Union Navy for use as a bombardment gunboat. They also stationed it as an interceptor gunboat off Confederate waterways to prevent trading with foreign countries.
USS Tawah was a 108-ton steamer acquired by the Union Navy during the American Civil War.
The third USS Virginia was a 581-ton blockade-running steamer captured by the United States Navy and put to use by the Union Navy during the American Civil War. Virginia served the U.S. Navy primarily as a mortar gunboat. Her ordnance included six 24-pounder howitzers and a 12-pounder rifled gun.
United States