The slave ship Harmonia began acquiring enslaved Africans for transportation to Brazil.

Vessel: Harmonia; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Silva, José de Caieros e. The voyage began at Rio de Janeiro on 7 December 1804. 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.