The slave ship Polca departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: Polca; flag: Portugal / Brazil; rig: Felucca; estimated standardized tonnage: 64. People recorded in connection with the voyage: Investor: Rios, José Álvares da Cruz; Captain: Pereira, J A. The voyage began at Bahia, place unspecified on 28 January 1850. Principal recorded place where captives were acquired: Lagos, Onim (Bight of Benin). Principal recorded disembarkation place: Bahia, place unspecified. Recorded outcome: Voyage completed as intended.