The slave ship Sinceridade e Atalante arrived with enslaved Africans in Brazil. About 229 people had been taken aboard and approximately 208 arrived.

Vessel: Sinceridade e Atalante; flag: Portugal / Brazil; rig: Sumaca. People recorded in connection with the voyage: Investor: Magalhães, Manoel José de; Captain: Souza, Jose Lourenço de; Captain: Silva, José da. The voyage began at Bahia, place unspecified on 10 November 1817. Principal recorded place where captives were acquired: Luanda (West Central Africa and St Helena). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 27 days. Recorded outcome: Voyage completed as intended.