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

Vessel: May; flag: Great Britain; rig: Ship; estimated standardized tonnage: 312. People recorded in connection with the voyage: Captain: Smith, John; Investor: Smith, John; Captain: Carson, John; Investor: Carson, John; Captain: Forbes, William; Investor: Forbes, William. The voyage began at Liverpool on 15 July 1803. Principal recorded place where captives were acquired: New Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Saint John (Antigua). Recorded outcome: Voyage completed as intended.