The slave ship Roy Nègre left the African coast carrying enslaved Africans toward Haiti. About 405 people had been taken aboard.

Vessel: Roy Nègre; flag: France; estimated standardized tonnage: 272.3. People recorded in connection with the voyage: Investor: Deridelière Le Roux; Captain: Casal, Math. The voyage began at Nantes on 1 October 1766. Principal recorded place where captives were acquired: Whydah, Ouidah (Bight of Benin). Principal recorded disembarkation place: Léogane. Recorded duration of the captives' Atlantic crossing: 102 days. Estimated mortality during the crossing: 6.0%. Recorded outcome: Voyage completed as intended.