The slave ship John departed from Grenada after the slave-trading stage of the voyage.

Vessel: John; flag: Great Britain; rig: Ship; estimated standardized tonnage: 268.7. People recorded in connection with the voyage: Captain: Tarleton, John; Investor: Tarleton, John; Captain: Boulton, Nicholas. The voyage began at Liverpool on 2 May 1764. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Grenada, place unspecified. Recorded outcome: Voyage completed as intended.