The slave ship NS da Conceição Vigilante left the African coast carrying enslaved Africans toward Brazil. About 151 people had been taken aboard.

Vessel: NS da Conceição Vigilante; flag: Portugal / Brazil; rig: Balandra. People recorded in connection with the voyage: Captain: Gastão, José Ribeiro de Assa; Investor: Gastão, José Ribeiro de Assa. The voyage began at Princes Island on 7 May 1810. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 28 days. Estimated mortality during the crossing: 17.0%.