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

Vessel: Portland; flag: Great Britain; rig: Snauw; estimated standardized tonnage: 182.3. People recorded in connection with the voyage: Captain: Hill, John; Investor: Hill, John; Captain: Dennison, William; Investor: Dennison, William; Investor: Gilbert, Thomas; Investor: Fazackerly, John; Investor: Beckwith, John; Investor: Wickstead, Richard; Investor: Ford, Stephen. The voyage began at Liverpool on 30 September 1771. Principal recorded place where captives were acquired: Windward Coast, place unspecified. Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Abandoned or condemned for unseaworthiness in the Americas.