The slave ship Alert left the African coast carrying enslaved Africans toward Jamaica. About 321 people had been taken aboard.

Vessel: Alert; flag: Great Britain; rig: Brig; estimated standardized tonnage: 100. People recorded in connection with the voyage: Captain: Anderson, J; Investor: Anderson, J; Captain: Thomson, Charles. The voyage began at Bristol on 29 May 1786. Principal recorded place where captives were acquired: Gold Coast, port unspecified. Principal recorded disembarkation place: Jamaica, place unspecified. Estimated mortality during the crossing: 7.0%. Recorded outcome: Voyage completed as intended.