The slave ship Ally arrived with enslaved Africans in Dominica. About 397 people had been taken aboard and approximately 364 arrived.

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 29 April 1788. Principal recorded place where captives were acquired: Africa, port unspecified (Other Africa). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.