The slave ship Duchess of Portland completed the voyage after transporting enslaved Africans to Jamaica.

Vessel: Duchess of Portland; flag: Great Britain; estimated standardized tonnage: 305.3. People recorded in connection with the voyage: Investor: Day, James; Investor: Hayman, William; Captain: Ruddock, John; Captain: Rogers, Owen. The voyage began at Bristol on 16 October 1728. Principal recorded place where captives were acquired: Africa, port unspecified (Other Africa). Principal recorded disembarkation place: Kingston. Recorded outcome: Voyage completed as intended.