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: 159. People recorded in connection with the voyage: Captain: Tarleton, John; Investor: Tarleton, John; Investor: Backhouse, Dan; Captain: Ireland, Nathaniel. The voyage began at Liverpool on 1 March 1798. Principal recorded place where captives were acquired: Bight of Biafra and Gulf of Guinea Islands, port unspecified. Principal recorded disembarkation place: Grenada, place unspecified. Recorded outcome: Voyage completed as intended.