The slave ship William departed from Suriname after the slave-trading stage of the voyage.

Vessel: William; flag: Great Britain; rig: Brig; estimated standardized tonnage: 173. People recorded in connection with the voyage: Captain: Ainsworth, John; Investor: Ainsworth, John; Investor: Bennett, Henry Leay; Investor: Blake, George; Investor: Leigh, John; Investor: Dwerryhouse, John; Investor: Rankin, David; Investor: Hilton, William; Investor: Smith, William. The voyage began at Liverpool on 28 June 1804. Principal recorded place where captives were acquired: Bight of Biafra and Gulf of Guinea Islands, port unspecified. Principal recorded disembarkation place: Suriname, place unspecified. Recorded outcome: Voyage completed as intended.