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

Vessel: Neptune; flag: Great Britain; rig: Ship; estimated standardized tonnage: 216. People recorded in connection with the voyage: Investor: Joseph, Abraham; Investor: Parr, Thomas; Captain: Bowie, James; Captain: Ireland, Nathaniel. The voyage began at Liverpool on 26 June 1800. Principal recorded place where captives were acquired: New Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Martinique, place unspecified. Recorded outcome: Sold in the Americas after disembarking enslaved people.