The slave ship Mermaid (a) Sirena arrived with enslaved Africans in Argentina. About 647 people had been taken aboard and approximately 647 arrived.

Vessel: Mermaid (a) Sirena; flag: Great Britain; estimated standardized tonnage: 453.1. People recorded in connection with the voyage: Investor: Hall, Thomas; Captain: Peirce, James; Investor: Peirce, James; Investor: Chapman, William; Investor: South Sea Company; Investor: Morice, Humphry. The voyage began at London on 3 April 1729. Principal recorded place where captives were acquired: Cabinda (West Central Africa and St Helena). Principal recorded disembarkation place: Buenos Aires. Recorded outcome: Voyage completed as intended.