The slave ship May departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Saint Kitts and Nevis.

Vessel: May; flag: Great Britain; rig: Brigantine; estimated standardized tonnage: 128.3. People recorded in connection with the voyage: Investor: Parker, John; Captain: Black, Patrick; Investor: Black, Patrick; Investor: Kennedy, Robert; Captain: Sime, John; Investor: Clowes, John. The voyage began at Liverpool on 18 April 1771. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: St Kitts, port unspecified. Recorded outcome: Voyage completed as intended.