The slave ship Neptune departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Grenada.

Vessel: Neptune; flag: Great Britain; rig: Brigantine; estimated standardized tonnage: 182.3. People recorded in connection with the voyage: Captain: Earle, William; Investor: Earle, William; Investor: Davenport, William; Investor: Parker, John; Captain: Black, Patrick; Investor: Black, Patrick; Captain: Jennings, Rob; Investor: Jennings, Rob; Investor: Kelley, Thomas; Captain: Potter, John. The voyage began at Liverpool on 4 March 1768. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Grenada, place unspecified. Recorded outcome: Sold in the Americas after disembarking enslaved people.