The slave ship Supplément left the African coast carrying enslaved Africans toward Haiti. About 172 people had been taken aboard.

Vessel: Supplément; flag: France; estimated standardized tonnage: 218.3. People recorded in connection with the voyage: Investor: Grandclos-Meslé, de; Captain: Bossinot. The voyage began at Saint-Malo on 13 May 1769. Principal recorded place where captives were acquired: Cabinda (West Central Africa and St Helena). Principal recorded disembarkation place: Cap Français. Recorded duration of the captives' Atlantic crossing: 62 days. Estimated mortality during the crossing: 11.0%. Recorded outcome: Voyage completed as intended.