The slave ship Cyclops departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Jamaica.

Vessel: Cyclops; flag: Great Britain; rig: Ship; estimated standardized tonnage: 297. People recorded in connection with the voyage: Investor: Case, George; Investor: Gregson, John; Investor: Aspinall, John B; Investor: Gregson, James; Captain: Threllfall, Joseph; Investor: Gregson William (Jr); Captain: Begg, William; Investor: Begg, William; Investor: Gregson, William; Investor: Apsinall, James. The voyage began at Liverpool on 4 May 1791. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Kingston. Estimated mortality during the crossing: 21.0%. Recorded outcome: Voyage completed as intended.