Coastwise slave trade Information
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The coastwise slave trade existed along the eastern coastal areas of the United States in the antebellum years prior to 1861. Shiploads and boatloads of slaves in the domestic trade were transported from place to place on the waterways. Hundreds of vessels of various sizes and capacities were used to transport the slaves, generally from markets of the Upper South, where there was a surplus of slaves, to the Deep South, where the development of new cotton plantations created high demand for labor.
International tensions developed when ships were forced by weather or incident into ports in Bermuda and the British West Indies, as the British freed the slaves as part of the banned trade on the high seas, even before its abolition of slavery in its territories in 1834. There were several cases: Comet (1830), Encomium (1833), Enterprise (1835), Hermosa (1840) and, most notably, the Creole case of 1841, the result of a ship slave revolt that forced the vessel into Nassau, Bahamas. British officials freed the 128 of 135 slaves who chose to stay in the Bahamas.
Prior to 1807, the 1787 U.S. Constitution and the 1793 Fugitive Slave Law were the only national United States laws on slavery. Individual states had enacted laws authorizing and regulating slavery within their boundaries. The Constitution prohibited regulation of slavery for 20 years.
The multi-faceted 1807 Act Prohibiting Importation of Slaves abolished the "importation of slaves" from Africa, effective in 1808. The United States and Great Britain patrolled to create an international blockade of Africa, trying to suppress the slave trade. In addition, US and British ships patrolled the Caribbean, where illegal slaves were generally brought for sale to the sugar plantations and smuggling into the US.
The 1807 Act also regulated the United States' "coastwise slave trade"; it protected shipping by domestic slave traders between markets along the Atlantic and Gulf coasts. Attorneys argued that the ships at sea were an extension of US sovereignty and the permitted domestic slave trade among the states.
Complications developed between the US and Great Britain from their differing interpretations of the application of laws against the slave trade in the Caribbean colonies. When American merchant ships were forced by weather or incident into ports in Bermuda and the British West Indies, the British freed the slaves as part of the banned trade on the high seas, even before its abolition of slavery in its territories in 1834. As early as 1825, the Home Office in London had ruled that "any slave brought to the Bahamas from outside the British West Indies would be manumitted, which led to 300 slaves owned by U.S. nationals being freed."  In addition, slaves who escaped to the Bahamas from Florida became free.
Several cases occurred as anti-slavery agitation increased and abolition was passed: Comet (1830), Encomium (1833), Enterprise (1835), and Hermosa (1840) In each case, the British freed the slaves from the ships that had put into ports in Bermuda and the Bahamas, whether by weather or accident. 
The most notable case was the 1841 Creole, the result of a ship slave revolt that forced the vessel into Nassau, Bahamas. One of the slave leaders had heard of slaves being freed from the Hermosa there the previous year. 
Holding that the slaves were free persons illegally detained in slavery, British officials ultimately freed the 128 of 135 slaves from the Creole who chose to stay in the Bahamas. It has been termed the "most successful slave revolt in US history".  The US slaveholders feared this would encourage other slave ship revolts.
- 1787: U.S. Constitution
- 1793: Fugitive Slave Law
- 1807: Congressional Act banning the "importation of slaves"
- 1841: United States v. The Amistad (1841) 
- 1850: Fugitive Slave Law
- 1857: Dred Scott case, US Supreme Court
- 1865: 13th Amendment to the US Constitution
The act of sailing along a coast and using landmarks for guidance is called cabotage, from the French word caboter ("to coast," "go from cape to cape"). When slaves were the merchandise being transported by cabotage, the practice was called the coastwise slave trade.
- Enterprise (slave ship)
- Creole case
- United States v. The Amistad (1841)
- Slavery in the United States
- Gerald Horne, Negro Comrades of the Crown: African Americans and the British Empire Fight the U.S. Before Emancipation, New York University (NYU) Press, 2012, p. 103
- Horne (2012), pp. 107-108
- Jervey, Edward D. and Huber, C. Harold. "The Creole Affair", The Journal of Negro History, Vol. 65, No. 3 (Summer 1980), pp. 196–211, accessed 8 April 2013
- Williams, Michael Paul (11 February 2002). "Brig Creole slaves". Richmond Times-Dispatch. Richmond, VA. Retrieved February 2, 2010.
- Dudley T. Cornish, Mutiny on the Amistad: The Saga of a Slave Revolt and Its Impact on American Abolition, Law, and Diplomacy (review), Civil War History, Volume 34, Number 1, March 1988, pp. 79-80, Project Muse 10.1353/cwh.1988.0011, accessed 30 March 2013. Note: The historian Samuel Eliot Morison in 1965 described the Amistad case as the most important court case involving slavery before being eclipsed by that of Dred Scott.