The slave ship Boa União arrived with enslaved Africans in Brazil. About 397 people had been taken aboard and approximately 371 arrived.

Vessel: Boa União; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Gomes, Miguel Ferreira; Captain: Ferreira, José da Rosa. The voyage began at Pernambuco, place unspecified. 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: 37 days. Estimated mortality during the crossing: 7.0%. Recorded outcome: Voyage completed as intended.