The slave ship Mariana Dáfne arrived with enslaved Africans in Brazil. About 345 people had been taken aboard and approximately 326 arrived.

Vessel: Mariana Dáfne; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Macedo, Diogo Teixeira de; Captain: Macedo, Joaquim Teixeira de; Investor: Macedo, Joaquim Teixeira de. The voyage began at Rio de Janeiro on 26 July 1817. Principal recorded place where captives were acquired: Cabinda (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 35 days. Estimated mortality during the crossing: 6.0%. Recorded outcome: Voyage completed as intended.