The slave ship S Antônio Protetor arrived with enslaved Africans in Brazil. About 301 people had been taken aboard and approximately 290 arrived.

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.