The slave ship S Antônio Protetor departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: S Antônio Protetor; flag: Portugal / Brazil; rig: Bergantim; estimated standardized tonnage: 179. People recorded in connection with the voyage: Investor: Regadas, Antônio de Queirós Monteiro; Captain: Silva, A J Ramos e; Captain: Lima, Inacio Gonçalves de. The voyage began at Pernambuco, place unspecified on 21 June 1827. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Maranhão. Estimated mortality during the crossing: 4.0%. Recorded outcome: Voyage completed as intended.