The slave ship Mary departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Saint Vincent and the Grenadines.

Vessel: Mary; flag: Great Britain; rig: Ship; estimated standardized tonnage: 164. People recorded in connection with the voyage: Captain: Tarleton, John; Investor: Tarleton, John; Captain: Tarleton, Thomas; Investor: Tarleton, Thomas; Investor: Tarleton, Clayton; Investor: Backhouse, Dan; Captain: Overton, Barton. The voyage began at Liverpool on 12 September 1787. Principal recorded place where captives were acquired: New Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: St Vincent, port unspecified. Recorded outcome: Voyage completed as intended.