The slave ship Imperador Feliz arrived with enslaved Africans in Brazil. About 579 people had been taken aboard and approximately 507 arrived.

Vessel: Imperador Feliz; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Guimarães, Francisco José; Captain: Pereira, Francisco Manoel. The voyage began at Rio de Janeiro on 17 February 1821. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 35 days. Estimated mortality during the crossing: 12.0%. Recorded outcome: Voyage completed as intended.