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

Vessel: Boa União; flag: Portugal / Brazil; rig: Bergantim; estimated standardized tonnage: 140. People recorded in connection with the voyage: Captain: Simões, Jerônimo José; Investor: Santos, Ana Joaquina dos. The voyage began at Pernambuco, place unspecified on 23 August 1827. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Pernambuco, place unspecified. Recorded outcome: Left home port, no further record.