The slave ship John left the African coast carrying enslaved Africans toward Dominica. About 300 people had been taken aboard.

Vessel: John; flag: Great Britain; rig: Ship; estimated standardized tonnage: 236.3. People recorded in connection with the voyage: Captain: Bold, Arthur; Investor: Bold, Arthur; Investor: Case, George; Investor: Gregson, William; Investor: Bold, Jonas; Captain: Bostock, Peter; Investor: Bostock, Peter; Investor: Backhouse, John; Investor: Aspinall, James. The voyage began at London on 20 August 1773. Principal recorded place where captives were acquired: Anomabu (Gold Coast). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.