The slave ship Mercúrio arrived with enslaved Africans in Brazil. About 423 people had been taken aboard and approximately 386 arrived.

Vessel: Mercúrio; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Rego, Lourenço Antonio do; Captain: Paiva, João Martins de. The voyage began at Rio de Janeiro on 27 August 1823. Principal recorded place where captives were acquired: Benguela (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Recorded duration of the captives' Atlantic crossing: 36 days. Estimated mortality during the crossing: 9.0%. Recorded outcome: Voyage completed as intended.