The slave ship Rio de la Plata arrived with enslaved Africans in Brazil. About 550 people had been taken aboard and approximately 521 arrived.

Vessel: Rio de la Plata; flag: Spain / Uruguay; rig: Bergantim; estimated standardized tonnage: 202. People recorded in connection with the voyage: Investor: Vilaça, José Teodoro; Investor: Castro, Luís Antônio de Carvalho e; Investor: Vasques, Domingos; Captain: Silva, Antônio Cardoso da. The voyage began at Montevideo on 28 June 1834. Principal recorded place where captives were acquired: West Central Africa and St Helena, port unspecified. Principal recorded disembarkation place: Rio de Janeiro. Estimated mortality during the crossing: 18.0%. Recorded outcome: Court of Mixed Commission, Rio de Janeiro, condemned.