The slave ship Leopoldina left the African coast carrying enslaved Africans toward Brazil. About 455 people had been taken aboard.

Vessel: Leopoldina; flag: Portugal / Brazil; rig: Galera. People recorded in connection with the voyage: Investor: Vieira, José Inácio Vaz; Captain: Silva, João Henriques da. The voyage began at Rio de Janeiro on 19 July 1820. Principal recorded place where captives were acquired: Quilimane (East Africa and Indian Ocean islands). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 74 days. Estimated mortality during the crossing: 5.0%. Recorded outcome: Voyage completed as intended.