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, F C. The voyage began at Bahia, place unspecified on 16 May 1850. Principal recorded place where captives were acquired: Africa, port unspecified (Other Africa). Principal recorded disembarkation place: Bahia, place unspecified. Recorded outcome: Voyage completed as intended.