The Union blockade in the American Civil War was a naval strategy by the United States to prevent the Confederacy from trading.
Scott's great snake, J. B. Elliot
The Confederate blockade runner SS Banshee in 1863
Blockade runner SS A.D. Vance, captured by the Union Navy and recommissioned as Advance
CSS David engaging New Ironsides on 5 October 1863, during the blockade of Charleston
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 along the Atlantic and Gulf of
Union blockade
…and required the monitoring of 3,500 miles (5,600 km) of Atlantic and Gulf coastline, including 12 major ports, notably New Orleans and Mobile. Those blockade runners fast enough to evade the Union Navy could carry only a small fraction of the supplies needed. They were operated largely by British and French citizens…
Advance Civil War blockade-runner
Blockade-runner mail to New Orleans via Nassau, Bahamas, stamped incoming ship 10-cents postage due
CSS Atlanta, converted from a blockade runner
A Confederate blockade runner at anchor at St. George's, Bermuda