The slave ship William departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Antigua and Barbuda.

Vessel: William; flag: Great Britain; rig: Brigantine; estimated standardized tonnage: 110.3. People recorded in connection with the voyage: Captain: Rigmaiden, Thomas; Investor: Rigmaiden, Thomas; Investor: James, W; Captain: Graham. The voyage began at Liverpool on 19 June 1770. Principal recorded place where captives were acquired: Windward Coast, place unspecified. Principal recorded disembarkation place: Saint John (Antigua). Recorded outcome: Voyage completed as intended.