The slave ship John completed the voyage after transporting enslaved Africans to Saint Vincent and the Grenadines.

Vessel: John; flag: Great Britain; rig: Schooner; estimated standardized tonnage: 128. People recorded in connection with the voyage: Captain: Ryan, Patrick; Investor: Collow, William. The voyage began at London on 4 January 1791. Principal recorded place where captives were acquired: Anomabu (Gold Coast). Principal recorded disembarkation place: St Vincent, port unspecified. Estimated mortality during the crossing: 1.0%. Recorded outcome: Voyage completed as intended.