The slave ship S João do Rio departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: S João do Rio; flag: Portugal / Brazil; rig: Sumaca. People recorded in connection with the voyage: Captain: Silva, Manoel Pereira da; Investor: Silva, Manoel Pereira da; Captain: Teixeira, Antônio José; Investor: Teixeira, Antônio José. The voyage began at Bahia, place unspecified on 17 March 1818. Principal recorded place where captives were acquired: Popo (Bight of Benin). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 42 days. Recorded outcome: Voyage completed as intended.