The slave ship Boulogne left the African coast carrying enslaved Africans toward French Guiana. About 428 people had been taken aboard.

Vessel: Boulogne; flag: France; estimated standardized tonnage: 272.3. People recorded in connection with the voyage: Investor: Dhaveloose; Investor: Meckenhauser; Captain: Houet, Ch. The voyage began at Nantes on 5 May 1764. Principal recorded place where captives were acquired: West Central Africa and St Helena, port unspecified. Principal recorded disembarkation place: Cayenne. Recorded duration of the captives' Atlantic crossing: 48 days. Estimated mortality during the crossing: 2.0%. Recorded outcome: Voyage completed as intended.