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

Vessel: William; flag: Great Britain; rig: Ship; estimated standardized tonnage: 218.3. People recorded in connection with the voyage: Investor: Case, George; Investor: Gregson, John; Investor: Gregson, James; Captain: Apsinall, James; Investor: Apsinall, James; Investor: Gregson William (Jr); Captain: Begg, William; Investor: Begg, William; Investor: Gregson, William; Investor: Wilson, Edward; Captain: Aspinall, Edward. The voyage began at Liverpool on 26 May 1785. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.