The slave ship Marcia completed the voyage after transporting enslaved Africans to Barbados.

Vessel: Marcia; flag: Great Britain; rig: Brig; estimated standardized tonnage: 128.3. People recorded in connection with the voyage: Captain: Sparling; Investor: Sparling; Investor: Mason, Edward; Investor: Brown, Cornelius; Captain: Jones, John; Investor: Bolden; Investor: Shepherd, William; Investor: Langton, Thomas; Investor: Birley, John; Investor: Orange, William; Investor: Greenhow, James; Captain: Baird, John. The voyage began at Liverpool on 1 October 1771. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Barbados, place unspecified. Recorded outcome: Voyage completed as intended.