The slave ship Quatro de Março arrived with enslaved Africans in Brazil. About 607 people had been taken aboard and approximately 550 arrived.

Vessel: Quatro de Março; flag: Portugal / Brazil; rig: Barque; estimated standardized tonnage: 260. People recorded in connection with the voyage: Captain: Pereira, F. The voyage began at Rio de Janeiro on 13 April 1839. Principal recorded place where captives were acquired: Quilimane (East Africa and Indian Ocean islands). Principal recorded disembarkation place: Mangaratiba. Recorded duration of the captives' Atlantic crossing: 60 days. Recorded outcome: Voyage completed as intended.