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

Vessel: Martha; flag: Great Britain; rig: Brig; estimated standardized tonnage: 141. People recorded in connection with the voyage: Investor: Backhouse, John; Captain: Houghton, John; Investor: Houghton, John; Captain: Fisher, Ralph; Investor: Fisher, Ralph; Investor: Kewley; Investor: Kewley, Patrick; Captain: Nicholson, Alexander; Investor: Nicholson, Alexander; Investor: Rutson, William. The voyage began at Liverpool on 28 February 1788. Principal recorded place where captives were acquired: Sierra Leone estuary. Principal recorded disembarkation place: Grenada, place unspecified. Recorded outcome: Voyage completed as intended.