The slave ship May departed from Jamaica after the slave-trading stage of the voyage.

Vessel: May; flag: Great Britain; rig: Ship; estimated standardized tonnage: 230. People recorded in connection with the voyage: Captain: Carson, John; Investor: Carson, John; Investor: Gregson William (Jr); Captain: Rigmaiden, Thomas; Investor: Rigmaiden, Thomas; Captain: Callan, Patrick; Investor: Forbes William. The voyage began at Liverpool on 20 November 1798. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Kingston. Recorded outcome: Voyage completed as intended.