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

Vessel: S João Nepomuceno; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Lisboa, José Antônio; Investor: Lisboa, José Antônio. The voyage began at Rio de Janeiro on 27 June 1801. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Estimated mortality during the crossing: 6.0%. Recorded outcome: Voyage completed as intended.