The slave ship Jemmy left the African coast carrying enslaved Africans toward Jamaica. About 138 people had been taken aboard.

Vessel: Jemmy; flag: Great Britain; rig: Ship; estimated standardized tonnage: 83. People recorded in connection with the voyage: Captain: Parkinson, John; Investor: Parkinson, John; Captain: Gamble, Samuel; Captain: Williams, Edward; Captain: Bostock, Rob; Investor: Bostock, Rob. The voyage began at Liverpool on 28 February 1789. Principal recorded place where captives were acquired: Banana Islands (Sierra Leone). Principal recorded disembarkation place: Montego Bay. Estimated mortality during the crossing: 4.0%. Recorded outcome: Voyage completed as intended.