The slave ship May completed the voyage after transporting enslaved Africans to Guyana.

Vessel: May; flag: Great Britain; rig: Ship; estimated standardized tonnage: 312. People recorded in connection with the voyage: Captain: Carson, John; Investor: Carson, John; Investor: Gregson William (Jr); Captain: Forbes, William; Investor: Forbes, William; Captain: Rigmaiden, Thomas; Investor: Rigmaiden, Thomas; Captain: Callan, Patrick. The voyage began at Liverpool on 6 May 1800. Principal recorded place where captives were acquired: Cape Mount (Cape Grand Mount) (Windward Coast). Principal recorded disembarkation place: Demerara. Recorded outcome: Voyage completed as intended.