The slave ship União Feliz arrived with enslaved Africans in Brazil. About 867 people had been taken aboard and approximately 647 arrived.

Vessel: União Feliz; flag: Portugal / Brazil; rig: Galera. People recorded in connection with the voyage: Investor: Correa, Antônio Dias; Captain: Teixeira, Jacinto Alves. The voyage began at Rio de Janeiro on 14 September 1818. 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: 48 days. Estimated mortality during the crossing: 25.0%. Recorded outcome: Voyage completed as intended.