The slave ship Adamastor arrived with enslaved Africans in Brazil. About 448 people had been taken aboard and approximately 262 arrived.

Vessel: Adamastor; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Lopes, Francisco da Silva; Investor: Lopes, Francisco da Silva; Investor: Rocha, Joaquim José da. The voyage began at Rio de Janeiro on 28 May 1823. 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: 142 days. Estimated mortality during the crossing: 42.0%. Recorded outcome: Voyage completed as intended.