The Zong's Crew Throws 132 Enslaved People Overboard for an Insurance Claim
A ship's captain drowns living, sick captives so their deaths can be claimed as insured cargo loss rather than uninsured natural death
Quick facts
- Date
- November 29, 1781 onward
- Ship
- Zong
- Owners
- William Gregson syndicate, Liverpool
- Killed
- 132 thrown overboard; about 10 more jumped
- Legal case
- Gregson v Gilbert (1783)
What happened
The British slave ship Zong, owned by a Liverpool trading syndicate led by William Gregson, left West Africa overloaded with roughly 470 captive Africans and a crew of only seventeen. Navigational errors extended the voyage far beyond its expected length, and by late November 1781 disease had already killed several crew members and more than 50 captives as food and drinking water ran low. Starting November 29, 1781, the ship's captain, Luke Collingwood, ordered the crew to begin throwing captives overboard, reasoning that if they died of thirst or illness aboard ship the loss would not be covered by insurance, but if they were thrown into the sea while still alive, their deaths could be claimed as a jettisoned cargo loss. Over the following days the crew threw 132 sick and dying captives into the ocean; roughly ten more jumped overboard rather than submit. When the ship reached Jamaica, Gregson's syndicate filed an insurance claim for the captives as lost cargo. The insurers refused to pay, and the resulting court case, Gregson v Gilbert, centered entirely on whether the deliberate killing of enslaved people constituted a legitimate insurance loss. No crew member was ever criminally prosecuted for the deaths.
Why it matters
The Zong case exposed to the British public, in stark and undeniable terms, that enslaved people were legally treated as insurable cargo whose deliberate killing could be litigated as a commercial dispute rather than prosecuted as murder. Formerly enslaved abolitionist Olaudah Equiano and campaigner Granville Sharp both worked to publicize the case, and historians credit the outrage it generated with meaningfully strengthening the British abolition movement in the following decade, even though the men responsible faced no criminal consequence.
How we know
The Gregson v Gilbert court proceedings, recorded in British legal reports of the period, document the case in detail; BlackPast.org and the London Museum both summarize the case using these court records and contemporaneous abolitionist correspondence from Sharp and Equiano.
Sources
- BlackPast.org. The Zong Massacre (1781) · General sourceblackpast.org · Cited as a "reference" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
- London Museum. The Zong Massacre Trial · General sourcelondonmuseum.org.uk · Cited as a "reference" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
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Related timelines
- The British Empire → · The Zong's owners were a Liverpool syndicate operating within the same imperial slaving economy that made the city Britain's leading slave port.