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

Vessel: Neptune; flag: Great Britain; rig: Ship; estimated standardized tonnage: 299.1. People recorded in connection with the voyage: Investor: Wadham; Investor: Strahan, John; Captain: Hingston, Justin; Captain: Shanks, Joseph. The voyage began at London on 12 June 1766. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.