The slave ship Lord Cassils departed from Dominica after the slave-trading stage of the voyage.

Vessel: Lord Cassils; flag: Great Britain; rig: Ship; estimated standardized tonnage: 146.3. People recorded in connection with the voyage: Captain: Black, Patrick; Investor: Black, Patrick; Investor: Kennedy, Robert; Captain: Madden, Henry; Investor: Clowes, John; Investor: Harding, Wingfield; Captain: McCutchan, Samuel. The voyage began at Liverpool on 9 February 1771. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded resistance: Revolt by enslaved people. Recorded outcome: Voyage completed as intended.