The slave ship Martha departed from Jamaica after the slave-trading stage of the voyage.

Vessel: Martha; flag: Great Britain; estimated standardized tonnage: 184.3. People recorded in connection with the voyage: Investor: Royal African Company; Captain: Levell, John. The voyage began at London on 4 February 1721. Principal recorded place where captives were acquired: Gambia (Senegambia and offshore Atlantic). Principal recorded disembarkation place: Jamaica, place unspecified. Recorded duration of the captives' Atlantic crossing: 29 days. Estimated mortality during the crossing: 7.5%. Recorded outcome: Voyage completed as intended.