The slave ship Mary Ann left the African coast carrying enslaved Africans toward Jamaica. About 255 people had been taken aboard.

Vessel: Mary Ann; flag: Great Britain; rig: Ship; estimated standardized tonnage: 141. People recorded in connection with the voyage: Captain: Boats, William; Investor: Boats, William; Captain: Seaman, Thomas; Investor: Seaman, Thomas; Investor: Percival, James; Captain: Bushell, Thomas. The voyage began at Liverpool on 2 March 1791. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Jamaica, place unspecified. Estimated mortality during the crossing: 19.0%. Recorded outcome: Voyage completed as intended.