The first USS Hatteras was a 1,126-ton iron-hulled steamer purchased by the Union Navy at the beginning of the American Civil War. She was outfitted as a gunboat and assigned to the Union blockade of the ports and waterways of the Confederate States of America. During an engagement with the disguised Confederate commerce raider, CSS Alabama, she was taken by surprise and was sunk off the coast of Galveston, Texas. The wreck site is one of the few listed on the National Register of Historic Places because of its location away from destructive surf and because of the ship's side-wheel design, which marks the transition between wooden sailing ships and steam-powered ships.
USS Santee was a wooden-hulled, three-masted sailing frigate of the United States Navy. She was the first U.S. Navy ship to be so named and was one of its last sailing frigates in service. She was acquired by the Union Navy at the start of the American Civil War, outfitted with heavy guns and a crew of 480, and was assigned as a gunboat in the Union blockade of the Confederate States. She later became a training ship then a barracks ship for the U.S. Naval Academy.
USS Sciota was a Unadilla-class gunboat built on behalf of the United States Navy for service during the Civil War. She was outfitted as a gunboat, with both a 20-pounder rifle for horizontal firing, and two howitzers for shore bombardment, and assigned to the Union blockade of the waterways of the Confederate States of America.
The Union blockade in the American Civil War was a naval strategy by the United States to prevent the Confederacy from trading.
USS Kennebec was a Unadilla-class gunboat built for the U.S. Navy following the outbreak of the American Civil War. She was named for the Kennebec River.
The Denbigh was a paddle steamer built in 1860 by John Laird, Son, and Company at Birkenhead. She initially sailed between Liverpool and Rhyl, north Wales but was later sold an used as a blockade runner before being destroyed in 1865.
CSS Rob Roy was a Confederate blockade runner commanded by Captain William Watson, that ran to and from Bermuda, the Bahamas and Cuba from 1862 to 1864, during the American Civil War.
USS Rachel Seaman was a wooden schooner purchased by the Union Navy during the American Civil War.
The Battle of Galveston Harbor was fought at Galveston, Texas on October 4, 1862, during the American Civil War. After attempts to blockade the Texas coastline were unsuccessful, the Union Navy decided to attempt to capture the port of Galveston. While Galveston was defended by Confederate forces, most of the cannons in the city's defenses were removed, as Galveston was thought to be indefensible. On October 4, five Union naval vessels commanded by Commander William B. Renshaw approached Galveston, and a single ship, USRC Harriet Lane was sent into Galveston Bay under a flag of truce.
USS Itasca was a Unadilla-class gunboat built for the U.S. 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 Bienville was a 1,558 long tons (1,583 t) (burden) wooden side-wheel paddle steamer acquired by the Union Navy early in the American Civil War. She was armed with heavy guns and assigned to the Union blockade of the waterways of the Confederate States of America.
USS Penobscot was a Unadilla-class gunboat built for the Union Navy during the American Civil War.
USS Morning Light was a sailing ship acquired 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 William G. Anderson was a barque used by the Union Navy during the American Civil War. She was assigned by the Navy to patrol navigable waterways of the Confederacy to prevent the South from trading with other countries.
USS Kanawha was a Unadilla-class gunboat built for 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 Kittatinny was a schooner originally named Stars and Stripes, which was acquired by the Union Navy during the American Civil War. She was used by the Union Navy as a gunboat in support of the Union Navy blockade of Confederate waterways.
USS Granite City was a Confederate blockade runner steamer captured in March 1863 by the Union Navy during the American Civil War. She was armed with cannon and by August 1863 was in service as a gunboat in support of the Navy blockade of Confederate waters. She was recaptured in January 1864 by Confederate forces, again became a blockade runner, and ultimately was abandoned as a wreck after running aground.
USS Gertrude was the British blockade-running steamship Gertrude captured by the Union Navy during the American Civil War. She was placed in service by the Navy as a gunboat and assigned to patrol the southern coast of the United States for ships attempting to run the Union blockade of Southern ports. She was later the American merchant ship Gussie Telfair until wrecked in 1880.
The third USS Virginia was a 581-ton blockade-running steamer captured by the United States Navy and put to use 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.
During the American Civil War, blockade runners were used to get supplies through the Union blockade of the Confederate States of America that extended some 3,500 miles (5,600 km) along the Atlantic and Gulf of Mexico coastlines and the lower Mississippi River. The Confederacy had little industrial capability and could not produce the quantity of arms and other supplies needed to fight against the Union. To meet this need, British investors financed numerous blockade runners that were constructed in the British Isles and were used to import the guns, ordnance and other supplies, in exchange for cotton that the British textile industry needed greatly. To penetrate the blockade, these relatively lightweight shallow draft ships, mostly built in British shipyards and specially designed for speed, but not suited for transporting large quantities of cotton, had to cruise undetected, usually at night, through the Union blockade. The typical blockade runners were privately owned vessels often operating with a letter of marque issued by the Confederate government. If spotted, the blockade runners would attempt to outmaneuver or simply outrun any Union Navy warships on blockade patrol, often successfully.
