The slave ship Diana arrived with enslaved Africans in Brazil. About 239 people had been taken aboard and approximately 221 arrived.

Vessel: Diana; flag: Portugal / Brazil; rig: Sumaca. People recorded in connection with the voyage: Investor: Vieira, José Inácio Vaz; Captain: Silva, Manoel Pacheco da. The voyage began at Rio de Janeiro on 13 June 1812. 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: 42 days. Estimated mortality during the crossing: 8.0%. Recorded outcome: Voyage completed as intended.