The slave ship Quatro de Abril arrived with enslaved Africans in Brazil. About 935 people had been taken aboard and approximately 753 arrived.

Vessel: Quatro de Abril; flag: Portugal / Brazil; rig: Galera. People recorded in connection with the voyage: Captain: Lontra, Rafael Inácio da Fonseca; Investor: Almeida, João Rodrigues Pereira de. The voyage began at Southeast Brazil, port unspecified. 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: 77 days. Estimated mortality during the crossing: 19.0%. Recorded outcome: Voyage completed as intended.