The slave ship Mary arrived with enslaved Africans in Cuba. About 110 people had been taken aboard and approximately 76 arrived.

Vessel: Mary; flag: U.S.A.; rig: Snauw; estimated standardized tonnage: 100. People recorded in connection with the voyage: Investor: Crary, Arch; Investor: Crary, Fred; Captain: Tayer, Edw; Investor: Tayer, Edw. The voyage began at Newport on 4 June 1799. Principal recorded place where captives were acquired: Africa, port unspecified (Other Africa). Principal recorded disembarkation place: Havana. Estimated mortality during the crossing: 31.0%. Recorded outcome: Voyage completed as intended.