The slave ship Quatro de Abril arrived with enslaved Africans in Brazil. About 627 people had been taken aboard and approximately 488 arrived.

Vessel: Quatro de Abril; flag: Portugal / Brazil; rig: Ship. People recorded in connection with the voyage: Investor: Almeida, João Rodrigues Pereira de; Captain: Luz, José Joaquim da. The voyage began at Rio de Janeiro on 10 July 1823. Principal recorded place where captives were acquired: Mozambique (East Africa and Indian Ocean islands). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 81 days. Estimated mortality during the crossing: 22.0%. Recorded outcome: Voyage completed as intended.