The slave ship S João Nepomuceno left the African coast carrying enslaved Africans toward Brazil. About 500 people had been taken aboard.

Vessel: S João Nepomuceno; flag: Portugal / Brazil; rig: Curveta. People recorded in connection with the voyage: Captain: Portela, Adriano; Investor: Amaral, Jose Francisco do. The voyage began at Rio de Janeiro on 17 October 1811. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 39 days. Recorded outcome: Voyage completed as intended.