The slave ship Polly completed the voyage after transporting enslaved Africans to Dominica.

Vessel: Polly; flag: Great Britain; rig: Sloop; estimated standardized tonnage: 56.3. People recorded in connection with the voyage: Investor: Wright, John; Investor: Wickstead, Richard; Captain: Mara, Daniel; Investor: Cope, John; Investor: Clark, John; Captain: Dyer, William. The voyage began at Liverpool on 15 March 1769. Principal recorded place where captives were acquired: Sierra Leone estuary. Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.