The slave ship Conde dos Arcos arrived with enslaved Africans in Brazil. About 446 people had been taken aboard and approximately 338 arrived.

Vessel: Conde dos Arcos; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Matos, João Vieira Barão de; Investor: Matos, João Vieira Barão de; Captain: Porto, Antônio Alves da Silva; Investor: Porto, Antônio Alves da Silva. The voyage began at Rio de Janeiro on 31 July 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: 56 days. Estimated mortality during the crossing: 24.0%. Recorded outcome: Voyage completed as intended.