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

Vessel: Diligente; flag: Portugal / Brazil; rig: Schooner. People recorded in connection with the voyage: Investor: Guimarães, Francisco José; Captain: Castro, Alexandre José de; Captain: Rodrigues, Custódio. The voyage began at Rio de Janeiro on 1 August 1816. 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: 45 days. Estimated mortality during the crossing: 6.0%. Recorded outcome: Voyage completed as intended.