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

Vessel: Ally; flag: Great Britain; rig: Ship; estimated standardized tonnage: 186. People recorded in connection with the voyage: Investor: Harper, William; Investor: Brade, Robert; Captain: Dodson, Thomas; Investor: Dodson, Thomas. The voyage began at Liverpool on 27 April 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.