The slave ship Duchesse de Polignac left the African coast carrying enslaved Africans toward Haiti. About 648 people had been taken aboard.

Vessel: Duchesse de Polignac; flag: France. People recorded in connection with the voyage: Investor: Marion; Investor: Brillantois; Investor: Jauge; Captain: Dupuy; Investor: Dupuy; Captain: Ozelle, Charles. The voyage began at Saint-Malo on 17 July 1783. Principal recorded place where captives were acquired: Malembo (West Central Africa and St Helena). Principal recorded disembarkation place: Port-au-Prince. Recorded duration of the captives' Atlantic crossing: 43 days. Estimated mortality during the crossing: 2.0%. Recorded outcome: Voyage completed as intended.