The slave ship Johanna departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Barbados.

Vessel: Johanna; flag: Great Britain; rig: Schooner; estimated standardized tonnage: 19. People recorded in connection with the voyage: Captain: Clarke, Thomas; Investor: Clarke, Thomas; Captain: Colley, Jas Eckly; Investor: Colley, Jas Eckly; Captain: Webster, John; Investor: Webster, John; Captain: Baseley, John. The voyage began at Liverpool on 20 June 1787. Principal recorded place where captives were acquired: Windward Coast (Nunez - Assini) (Other Africa). Principal recorded disembarkation place: Barbados, place unspecified. Recorded outcome: Sold in the Americas after disembarking enslaved people.