The slave ship Mary Ann left the African coast carrying enslaved Africans toward Jamaica. About 230 people had been taken aboard.

Vessel: Mary Ann; flag: Great Britain; rig: Ship; estimated standardized tonnage: 136. People recorded in connection with the voyage: Captain: Boats, William; Investor: Boats, William; Captain: Seaman, Thomas; Investor: Seaman, Thomas; Investor: Percival, James; Captain: Rives, Thomas; Investor: Rives, Thomas. The voyage began at Liverpool on 28 May 1789. Principal recorded place where captives were acquired: Anomabu (Gold Coast). Principal recorded disembarkation place: Jamaica, place unspecified. Estimated mortality during the crossing: 4.0%. Recorded outcome: Voyage completed as intended.