The slave ship União arrived with enslaved Africans in Brazil. About 196 people had been taken aboard and approximately 194 arrived.

Vessel: União; flag: Portugal / Brazil; rig: Schooner. People recorded in connection with the voyage: Investor: Silva, Vicente de Paula e; Captain: Silveira, André Pinto da; Investor: Silveira, André Pinto da. The voyage began at Bahia, place unspecified. Principal recorded place where captives were acquired: Malembo (West Central Africa and St Helena). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 39 days. Estimated mortality during the crossing: 1.0%.