The slave ship Union left the African coast carrying enslaved Africans toward Jamaica. About 549 people had been taken aboard.

Vessel: Union; flag: Great Britain; rig: Ship; estimated standardized tonnage: 415. People recorded in connection with the voyage: Captain: King, Thomas; Investor: King, Thomas; Captain: Calvert; Investor: Calvert; Investor: Camden, William; Captain: Thomson, James. The voyage began at London on 31 October 1794. Principal recorded place where captives were acquired: Gold Coast, port unspecified. Principal recorded disembarkation place: Kingston. Estimated mortality during the crossing: 1.0%. Recorded outcome: Voyage completed as intended.