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

Vessel: Neptune; flag: France; estimated standardized tonnage: 281.3. People recorded in connection with the voyage: Investor: François, Pierre; Captain: Duqué. The voyage began at Nantes on 23 October 1764. Principal recorded place where captives were acquired: Malembo (West Central Africa and St Helena). Principal recorded disembarkation place: Cayes (Les). Recorded duration of the captives' Atlantic crossing: 89 days. Estimated mortality during the crossing: 12.0%. Recorded outcome: Voyage completed as intended.