The slave ship Diana left the African coast carrying enslaved Africans toward Brazil. About 349 people had been taken aboard.

Vessel: Diana; flag: Portugal / Brazil; rig: Curveta. People recorded in connection with the voyage: Captain: Leal, João José; Investor: Leal, João José. The voyage began at Bahia, place unspecified on 10 January 1801. Principal recorded place where captives were acquired: Costa da Mina, place unspecified (Bight of Benin). Principal recorded disembarkation place: Bahia, place unspecified. Recorded outcome: Bought at least one slave in Africa - subsequent fate unknown.