The slave ship Zéfiro arrived with enslaved Africans in Brazil. About 518 people had been taken aboard and approximately 477 arrived.

Vessel: Zéfiro; flag: Portugal / Brazil; rig: Bergantim; estimated standardized tonnage: 136. People recorded in connection with the voyage: Investor: Guimarães, Constantino Dias Pinheiro; Investor: Souza, Antônio Francisco de; Captain: Souza, Antônio Ferreira de. The voyage began at Rio de Janeiro on 18 August 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: 45 days. Estimated mortality during the crossing: 8.0%. Recorded outcome: Voyage completed as intended.