The slave ship Doze de Outubro departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: Doze de Outubro; flag: Portugal / Brazil; rig: Schooner; estimated standardized tonnage: 190. People recorded in connection with the voyage: Captain: Pereira, João; Investor: Pereira, João; Captain: Costa, Antônio Lopes da. The voyage began at Rio de Janeiro on 9 July 1837. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Copacabana. Recorded outcome: Voyage completed as intended.