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Over the course of nearly four hundred years, the Atlantic slave trafficking system saw 12.5 million Africans forcibly taken from their homelands to the Americas. A staggering 1.8 million of those individuals died during the Middle Passage, subjected to unfathomable conditions of extreme confinement, filth, and disease. Some chose to end their suffering by throwing themselves overboard, whereas still more were callously thrown into the sea.

Two Interwoven Narratives

In The Zorg, author Siddharth Kara presents two parallel narratives. The first details a harrowing incident aboard the namesake slave ship—the deliberate murder of 132 enslaved Africans by its British crew. The second story explores how this event came to influence the abolition of the Atlantic slave trade in 1807, thanks largely by the relentless efforts of a dazzling array of abolitionist activists. Among them was Olaudah Equiano, who authored one of the rare first-person narratives of the Middle Passage, calling it “a scene of horror almost inconceivable”.

Liverpool's Central Role

The account begins in Liverpool, a port city that at the height of its prosperity was accountable for 40% of Europe's slave trade. Investing in slavery was a highly profitable venture for everyone from the elites to the working classes. One such investor, William Gregson, accumulated his earnings from his trade, ploughed them into the slave trade, and rose to become a prominent citizen and later mayor. Gregson provided the funds for the slave ship The William, which departed from Liverpool for West Africa in October 1780 under Captain Richard Hanley. Its hold was loaded with commodities like tobacco, firearms, knives, and so-called “India goods” such as chintz and cowrie shells—the latter being a standard rate in the acquisition of enslaved people.

A Ship Seized

Around the same time, a Dutch slave vessel named the Zorg (later anglicized by the British as the Zong) had departed the Netherlands. With Britain at war with the Dutch in late 1780, the Royal Navy granted British ships permission to capture Dutch ships at sea—a de facto sanctioning of privateering. The Zorg was soon taken by a British captain and held off the Gold Coast. Meanwhile, Captain Hanley, on a slaving expedition, picked up a disgraced British governor named Robert Stubbs, who had been removed for graft.

The Nightmare Passage

When Hanley reached Cape Coast Castle—a stronghold with a notorious holding cell beneath it—he assumed control of the captured Zorg. He proceeded to grossly overload it with enslaved people, put a dozen of his own crew on board, and made Luke Collingwood, a ship's surgeon of dubious nautical skill, its captain. In August 1781, the Zorg finally left Accra carrying 442 enslaved Africans, 17 crew members, and one notorious passenger: the former governor, Robert Stubbs.

Kara excels in using contemporaneous sources to bring to life the general hell of being trafficked on a slave ship.

The Zorg's journey was plagued with calamity. "The flux" ravaged the vessel, and then scurvy. The captain succumbed to sickness, became delirious, and appointed Stubbs. Thus, “a ship full of decay and death was being commanded by a passenger.” Kara masterfully utilizes period testimonies to paint a picture of the unmitigated terror. The powerful testimony of Alexander Falconbridge, a doctor who became an activist, describes how the enslaved people's skin was frequently worn down to the bone from lying on bare wood, their flesh pinched and torn between the planks.

The Unspeakable Decision

By late November 1781, the Zorg was still miles from Jamaica and dangerously short on water. The crew made the decision to jettison a number of the enslaved Africans, who had already suffered through months of obscene conditions below deck. This monstrous act was not motivated by ensuring survival—the Africans had pleaded to be allowed to live, even without water rations—but by cold economic greed. Ship insurance policies did not cover deaths from natural causes, but they would pay for cargo jettisoned out of “necessity” for the ship's safety. Over several days, the crew drowned “those Africans who would be worth less at auction”—the infirm, the sick, including women and children, even a baby born during the voyage.

Insurance and Injustice

Back in Liverpool, investor William Gregson was dissatisfied with the financial return on his investment. He submitted an insurance claim for £30 per lost slave—a substantial sum in today's money. The insurers declined to pay. In March 1783, Gregson took them to court and won a trial by jury, with his lawyers claiming that throwing the enslaved people overboard had been “necessary.”

Catalyzing the Movement

According to Kara, “there is a direct line of causality between the public exposure of the Zorg murders and the first movement to abolish slavery in England.” Just twelve days after the trial, an anonymous letter appeared in a widely read English newspaper. The author, who claimed to have attended the court proceedings, made a powerful case against slavery, citing the Zorg case as a prime example of its inherent evil. Olaudah Equiano read the letter and took it to the activist Granville Sharp, who petitioned for a new trial. At the following hearing, the events on the Zorg were reviewed in forensic detail, precisely what the abolitionists had hoped for.

A Sustained Campaign

In the spring of 1787, the founding members of the Society for Effecting the Abolition of the Slave Trade first met. Over the following years, they wrote letters, made speeches, lobbied tirelessly, and gathered evidence on the realities of the slave trade. “Their efforts,” Kara writes, “would lay a blueprint for the pursuit of social justice.” After years of setbacks, the Act for the Abolition of the Slave Trade was enacted in 1807.

An Enduring Impact

The debate over who or what deserves credit for abolition remains contentious. The Zorg's legacy, however, is powerfully evident in J.M.W. Turner's famous painting, The Slave Ship, which was based on the events of 1781. While slavery has been widespread in human history, its abolition following a prolonged mass campaign was unprecedented, serving as an affirmation to the power of persistent activism, the pen, and unwavering determination.

The Author's Approach

In contrast to his previous books—such as the Pulitzer finalist Cobalt Red—Kara has had to address certain lacunae in the available documentation. At times, imaginative flourishes sit awkwardly next to scrupulously factual accounts, giving the book a slightly chimeric feel. A blend of narrative suspense and part serious nonfiction, The Zorg ultimately succeeds in illuminating one of history's most horrific episodes, using powerful storytelling and documented fact to create a account that stays with the reader well after the final page.