The slave ship John left the African coast carrying enslaved Africans toward Jamaica. About 200 people had been taken aboard.

Vessel: John; flag: Great Britain; rig: Snauw; estimated standardized tonnage: 106. People recorded in connection with the voyage: Captain: King, Thomas; Investor: King, Thomas; Investor: Camden, William; Investor: Calvert, Anthony; Captain: Willoughby, William; Captain: Owen. The voyage began at Jamaica, place unspecified on 1789. Principal recorded place where captives were acquired: Cape Coast Castle (Gold Coast). Principal recorded disembarkation place: Jamaica, place unspecified. Estimated mortality during the crossing: 15.0%. Recorded outcome: Voyage completed as intended.