The slave ship Zéfiro departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: Zéfiro; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Midosi, Guilherme; Captain: Melo, José Antônio de; Captain: Costa, Domingos Luís da. The voyage began at Rio de Janeiro on 14 August 1821. 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: 44 days. Estimated mortality during the crossing: 4.0%. Recorded outcome: Voyage completed as intended.