The slave ship Mariane left the African coast carrying enslaved Africans toward Haiti. About 257 people had been taken aboard.

Vessel: Mariane; flag: France; estimated standardized tonnage: 317.3. People recorded in connection with the voyage: Investor: Geslin, Rene; Investor: Geslin; Captain: Ricard, J. The voyage began at Nantes on 17 May 1766. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Cayes (Les). Recorded duration of the captives' Atlantic crossing: 103 days. Estimated mortality during the crossing: 23.0%. Recorded outcome: Voyage completed as intended.