The slave ship Duchesse de Polignac completed the voyage after transporting enslaved Africans to Haiti.

Vessel: Duchesse de Polignac; flag: France. People recorded in connection with the voyage: Investor: Marion; Investor: Brillantois; Captain: Lefer de La Motte. The voyage began at Saint-Malo on 8 April 1785. Principal recorded place where captives were acquired: Malembo (West Central Africa and St Helena). Principal recorded disembarkation place: Cap Français. Estimated mortality during the crossing: 13.0%. Recorded outcome: Voyage completed as intended.