The slave ship Protetor began acquiring enslaved Africans for transportation to Brazil.

Vessel: Protetor; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Captain: Freitas, Gregório José Ribeiro de; Investor: Guimarães, Francisco José. The voyage began at Rio de Janeiro on 18 June 1812. Principal recorded place where captives were acquired: Cabinda (West Central Africa and St Helena). Principal recorded disembarkation place: Rio de Janeiro. Estimated mortality during the crossing: 5.0%. Recorded outcome: Voyage completed as intended.