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

Vessel: Mary; flag: Great Britain; rig: Ship; estimated standardized tonnage: 118. People recorded in connection with the voyage: Captain: Deane, Edward; Investor: Deane, Edward; Investor: Harper, William; Investor: Brade, Robert. The voyage began at Liverpool on 19 July 1786. Principal recorded place where captives were acquired: New Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.