The slave ship Mary and Hannah departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Suriname.

Vessel: Mary and Hannah; flag: Great Britain; rig: Brig; estimated standardized tonnage: 196. People recorded in connection with the voyage: Captain: Huson, Thomas; Investor: Huson, Thomas; Captain: Brown, James; Investor: Brown, James; Captain: Blofield, John. The voyage began at Liverpool on 21 August 1804. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Suriname, place unspecified. Recorded outcome: Voyage completed as intended.