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

Vessel: Orestes; flag: Portugal / Brazil; rig: Brig; estimated standardized tonnage: 108. People recorded in connection with the voyage: Investor: Santos, Joaquim Ferreira dos; Investor: Silva, Elias Batista da; Captain: Pacheco, José Jacinto. The voyage began at Pernambuco, place unspecified on 30 March 1826. 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: 23 days. Estimated mortality during the crossing: 5.0%.