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

Vessel: Mariana; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Santos, Félix José dos; Investor: Santos, Félix José dos; Captain: Maia, José Ferreira. The voyage began at Rio de Janeiro on 21 March 1827. Principal recorded place where captives were acquired: Quilimane (East Africa and Indian Ocean islands). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 62 days. Estimated mortality during the crossing: 17.0%. Recorded outcome: Voyage completed as intended.