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Slave ships were large cargo ships specially built or converted from the 17th to the 19th century for transporting slaves. Such ships were also known as "Guineamen" because the trade involved human trafficking to and from the Guinea coast in West Africa. [2]
In the early 1600s, more than a century after the arrival of Europeans to the Americas, [3] demand for unpaid labor to work plantations made slave-trading a profitable business. The Atlantic slave trade peaked in the last two decades of the 18th century, during and following the Kongo Civil War. [4]
To ensure profitability, the owners of the ships divided their hulls into holds with little headroom, so they could transport as many slaves as possible. Unhygienic conditions, dehydration, dysentery, and scurvy led to a high mortality rate, on average 15% [5] and up to a third of captives. Often, the ships carried hundreds of slaves, who were chained tightly to plank beds. For example, the slave ship Henrietta Marie carried about 200 slaves on the long Middle Passage. They were confined to cargo holds, with each slave chained with little room to move. [6]
The most significant routes of the slave ships led from the north-western and western coasts of Africa to South America and the south-east coast of what is today the United States, and the Caribbean. As many as 20 million Africans were transported by ship. [7] The transportation of slaves from Africa to America was known as the Middle Passage of the triangular trade.
The owners of slave ships embarked as many slaves as possible to make the voyage more profitable. They did so by cramming, chaining, and selectively grouping slaves to maximize the use of space. Slaves began to die of lack of oxygen due to these cramped conditions. Portuguese lawmakers passed the Tonnage Act of 1684 in order to slightly improve conditions. [8] Slaves on board were underfed and brutally treated, causing many to die before even arriving at their destination; dead or dying slaves were dumped overboard. An average of one to two months was needed to complete the journey. The slaves were naked and shackled together with several different types of chains, stored on the floor beneath bunks with little to no room to move. Some captains assigned slave guardians to watch over and keep the other slaves in check. They spent a large portion of time pinned to floorboards, which would wear skin on their elbows down to the bone. Diseases such as dysentery, diarrhea, ophthalmoparesis, malaria, smallpox, yellow fever, scurvy, measles, typhoid fever, hookworm, tapeworm, sleeping sickness, trypanosomiasis, yaws, syphilis, leprosy, elephantiasis, and melancholia resulted in the deaths of slaves on board slave ships. [9] Firsthand accounts from former slaves, such as Olaudah Equiano, describe the horrific conditions that slaves were forced to endure. [10]
The Slave Trade Act 1788, also known as Dolben's Act, regulated conditions on board British slave ships for the first time since the slave trade started. It was introduced to the United Kingdom Parliament by Sir William Dolben, an advocate for the abolition of slavery. For the first time, limits were placed on the number of slaves that could be carried. Under the terms of the act, ships could transport 1.67 slaves per ton up to a maximum of 207 tons burthen, after which only one slave per ton could be carried. [11] The well-known slave ship Brookes was limited to carrying 454 people; it had previously transported as many as 609 enslaved. [1] Olaudah Equiano was among the supporters of the act, but it was opposed by some abolitionists, such as William Wilberforce, who feared it would establish the idea that the slave trade simply needed reform and regulation, rather than complete abolition. [12] Slave counts can also be estimated by deck area rather than registered tonnage, which results in a lower number of errors and only 6% deviation from reported figures. [13]
This limited reduction in the overcrowding on slave ships may have reduced the on-board death rate, but this is disputed by some historians. [14]
In the 18th and early 19th centuries, the sailors on slave ships were often poorly paid and subject to brutal discipline and treatment. [15] Furthermore, a crew mortality rate of around 20% was expected during a voyage, with sailors dying as a result of disease, flogging, or slave uprisings. [16] [17] While conditions for the crew were far better than those of the slaves, they remained harsh and contributed to a high death rate. Sailors often had to live and sleep without shelter on the open deck for the entirety of the Atlantic voyage, as the space below deck was occupied by slaves. [15]
Disease, specifically malaria and yellow fever, was the most common cause of death among sailors. A high crew mortality rate on the return voyage was in the captain's interests, as it reduced the number of sailors who had to be paid on reaching the home port. [17] Crew members who survived were frequently cheated out of their wages on their return. [15]
These aspects of the slave trade were widely known; the notoriety of slave ships amongst sailors meant those joining slave ship crews did so through coercion or because they could find no other employment. This was often the case for sailors who had spent time in prison. [18]
Black sailors are known to have been among the crews of British slave ships. These men came from Africa or the Caribbean, or were British-born. Dozens of individuals have been identified by researchers from surviving records. Knowledge of this is incomplete, though, as many captains did not record the ethnicity of crew members in their ship's muster roll. [19] African men (and occasionally African women) also served as translators. [20]
The African slave trade was outlawed by the United States and the United Kingdom in 1807. The 1807 Abolition of the Slave Trade Act outlawed the slave trade throughout the British Empire. The U.S. law took effect on 1 January 1808. [21] After that date, all U.S. and British slave ships leaving Africa were seen by the law as pirate vessels subject to capture by the U.S. Navy or Royal Navy. [22] In 1815, [23] at the Council of Vienna, Spain, Portugal, France, and the Netherlands also agreed to abolish their slave trade. The trade did not end on legal abolition; between 1807 and 1860 British vessels captured 1,600 slave ships and freed 160,000 slaves. [24]
After abolition, slave ships adopted quicker, more maneuverable forms to evade capture by naval warships, one favorite form being the Baltimore Clipper. Some had hulls fitted with copper sheathing, which significantly increased speed by preventing the growth of marine weed on the hull, which would otherwise cause drag. [25] This was very expensive, and at the time was only commonly fitted to Royal Navy vessels. The speed of slave ships made them attractive ships to repurpose for piracy, [26] and also made them attractive for naval use after capture; USS Nightingale and HMS Black Joke were examples of such vessels. HMS Black Joke had a notable career in Royal Navy service and was responsible for capturing a number of slave ships and freeing many hundreds of slaves.
Attempts have been made by descendants of African slaves to sue Lloyd's of London for playing a key role in underwriting insurance policies taken out on slave ships bringing slaves from Africa to the Americas. [27]
John Newton was an English evangelical Anglican cleric and slavery abolitionist. He had previously been a captain of slave ships and an investor in the slave trade. He served as a sailor in the Royal Navy and was himself enslaved for a time in West Africa. He is noted for being author of the hymns Amazing Grace and Glorious Things of Thee Are Spoken.
The Middle Passage was the stage of the Atlantic slave trade in which millions of enslaved Africans were transported to the Americas as part of the triangular slave trade. Ships departed Europe for African markets with manufactured goods, which were then traded for slaves with rulers of African states and other African slave traders. Slave ships transported the slaves across the Atlantic. The proceeds from selling slaves were then used to buy products such as furs and hides, tobacco, sugar, rum, and raw materials, which would be transported back to Europe to complete the triangle.
Thomas Clarkson was an English abolitionist, and a leading campaigner against the slave trade in the British Empire. He helped found the Society for Effecting the Abolition of the Slave Trade and helped achieve passage of the Slave Trade Act 1807, which ended British trade in slaves.
The Slave Trade Act 1807, officially An Act for the Abolition of the Slave Trade, was an Act of the Parliament of the United Kingdom prohibiting the slave trade in the British Empire. Although it did not abolish the practice of slavery, it encouraged British action to press other nation states to abolish their own slave trades. It took effect on 1 May 1807, after 18 years of trying to pass an abolition bill.
Olaudah Equiano, known for most of his life as Gustavus Vassa, was a writer and abolitionist. According to his memoir, he was from the village of Essaka in modern southern Nigeria. Enslaved as a child in West Africa, he was shipped to the Caribbean and sold to a Royal Navy officer. He was sold twice more before purchasing his freedom in 1766.
The Zong massacre was a mass killing of more than 130 enslaved African people by the crew of the British slave ship Zong on and in the days following 29 November 1781. The William Gregson slave-trading syndicate, based in Liverpool, owned the ship as part of the Atlantic slave trade. As was common business practice, they had taken out insurance on the lives of the enslaved Africans as cargo. According to the crew, when the ship ran low on drinking water following navigational mistakes, the crew threw enslaved Africans overboard.
The Blockade of Africa began in 1808 after the United Kingdom outlawed the Atlantic slave trade, making it illegal for British ships to transport slaves. The Royal Navy immediately established a presence off Africa to enforce the ban, called the West Africa Squadron. Although the ban initially applied only to British ships, Britain negotiated treaties with other countries to give the Royal Navy the right to intercept and search their ships for slaves.
The West Africa Squadron, also known as the Preventative Squadron, was a squadron of the British Royal Navy whose goal was to suppress the Atlantic slave trade by patrolling the coast of West Africa. Formed in 1808 after the British Parliament passed the Slave Trade Act 1807 and based out of Portsmouth, England, it remained an independent command until 1856 and then again from 1866 to 1867.
The Interesting Narrative of the Life of Olaudah Equiano, Or Gustavus Vassa, The African, first published in 1789 in London, is the autobiography of Olaudah Equiano, an African from what is now Nigeria who was enslaved in childhood and eventually earned his freedom and became an abolitionist in the United Kingdom.
The Society for Effecting the Abolition of the Slave Trade, also known as the Society for the Abolition of the Slave Trade, and sometimes referred to as the Abolition Society or Anti-Slavery Society, was a British abolitionist group formed on 22 May 1787. The objective of abolishing the slave trade was achieved in 1807. The abolition of slavery in all British colonies followed in 1833.
The Sons of Africa were a late-18th-century group in Britain that campaigned to end African chattel slavery. The "corresponding society" has been called the Britain's first black political organisation. Its members were educated Africans in London, including formerly enslaved men such as Ottobah Cugoano, Olaudah Equiano and other leading members of London's black community.
A scramble was a particular form of slave auction that took place during the Atlantic slave trade in the European colonies of the West Indies and the domestic slave trade of the United States. It was called a "scramble" because buyers would run around in an open space all at once to gather as many enslaved people as possible. Another name for a scramble auction is "Grab and go" slave auctions. Slave ship captains would go to great lengths to prepare their captives and set prices for these auctions to make sure they would receive the highest amount of profits possible because it usually did not involve earlier negotiations or bidding.
John Kimber was the captain of a British slave ship who was tried for murder in 1792, after the abolitionist William Wilberforce accused him of torturing to death an enslaved teenaged girl on the deck of his ship. Kimber was acquitted, but the trial gained much attention in the press. The case established that slave ships' crew could be tried for murder of slaves.
The Slave Trade Act 1788, also known as the Regulated Slave Trade Act 1788 or Dolben's Act, was an Act of Parliament that limited the number of enslaved people that British slave ships could transport, based on the ships' tons burthen (bm). It was the first British legislation enacted to regulate slave shipping.
Abolitionism in the United Kingdom was the movement in the late 18th and early 19th centuries to end the practice of slavery, whether formal or informal, in the United Kingdom, the British Empire and the world, including ending the Atlantic slave trade. It was part of a wider abolitionism movement in Western Europe and the Americas.
Hannah was built in Liverpool in 1795. She made four voyages as a slave ship in the triangular trade of enslaved people. She was lost in 1801 as she was returning home after having delivered her captives on her fourth voyage.
Tom was launched in 1780 in America, possibly under another name. She first appeared in British records in 1792. From 1792, Tom participated as a slave ship in the triangular trade in enslaved people. She made two complete voyages from Liverpool. French frigates captured her in 1794, while she was on her third voyage, but before she could acquire any captives.
Bell was launched in 1788 in Liverpool. Between 1788 and 1795 she made five voyages as a Liverpool-based slave ship in the triangular trade in enslaved people. The French captured her in 1798 on her sixth enslaving voyage after she had embarked her captives. In 1798, the Royal Navy destroyed her.
Ranger was launched in Liverpool in 1789. She made four complete voyages as a slave ship in the triangular trade in enslaved people. A French privateer captured her in 1796 in a single ship action during her fifth voyage transporting enslaved people. She was recaptured, but thereafter disappears from online records.
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