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

Vessel: Diana; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Fernandes, Manoel da Silva; Captain: Leal, João José; Investor: Leal, João José; Captain: Souza, José de. The voyage began at Bahia, place unspecified on 1 July 1802. Principal recorded place where captives were acquired: Costa da Mina, place unspecified (Bight of Benin). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 43 days. Estimated mortality during the crossing: 5.0%. Recorded outcome: Voyage completed as intended.