The slave ship Mars left the African coast carrying enslaved Africans toward Haiti. About 501 people had been taken aboard.

Vessel: Mars; flag: France; estimated standardized tonnage: 453.1. People recorded in connection with the voyage: Investor: Bouteiller; Captain: Thiercelin, Roland; Investor: Thiercelin, Roland; Investor: Bouteiller, Guillaume. The voyage began at Nantes on 31 May 1749. Principal recorded place where captives were acquired: Gold Coast, port unspecified. Principal recorded disembarkation place: Léogane. Recorded duration of the captives' Atlantic crossing: 118 days. Estimated mortality during the crossing: 10.0%. Recorded outcome: Voyage completed as intended.