The slave ship Alert left the African coast carrying enslaved Africans toward Jamaica. About 330 people had been taken aboard.

Vessel: Alert; flag: Great Britain; rig: Ship; estimated standardized tonnage: 177. People recorded in connection with the voyage: Captain: George, John; Captain: Anderson, J; Investor: Anderson, J; Captain: Thomson, Charles. The voyage began at Bristol on 16 July 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.