The slave ship Mary departed from Jamaica after the slave-trading stage of the voyage.

Vessel: Mary; flag: Great Britain; rig: Ship; estimated standardized tonnage: 171. People recorded in connection with the voyage: Captain: Hammond, Benj; Investor: Hammond, Benj; Investor: Pickop, Thomas; Captain: Ward, Robert; Investor: Ward, Robert; Investor: Denney, Plato; Captain: Henshall, Phillip; Investor: Ackers, James; Investor: Grundy, John. The voyage began at Liverpool on 10 March 1799. Principal recorded place where captives were acquired: West Central Africa and St Helena, port unspecified. Principal recorded disembarkation place: Jamaica, place unspecified. Recorded outcome: Voyage completed as intended.