The slave ship O'Hara completed the voyage after transporting enslaved Africans to Dominica.

Vessel: O'Hara; flag: Great Britain; rig: Brig; estimated standardized tonnage: 269.3. People recorded in connection with the voyage: Captain: Spence, John; Investor: Clark, J. The voyage began at London on 6 March 1777. Principal recorded place where captives were acquired: Saint-Louis (Senegambia and offshore Atlantic). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.