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

Vessel: Polly; flag: Great Britain; rig: Snauw; estimated standardized tonnage: 182.3. People recorded in connection with the voyage: Captain: Kendall, John; Investor: Kendall, John; Captain: Earle, William; Investor: Earle, William; Investor: Gregson, William; Investor: Knight, John. The voyage began at Liverpool on 28 April 1771. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Barbados, place unspecified. Recorded outcome: Voyage completed as intended.