The slave ship Mill left the African coast carrying enslaved Africans toward Grenada. About 500 people had been taken aboard.

Vessel: Mill; flag: U.S.A.; rig: Ship; estimated standardized tonnage: 269.3. People recorded in connection with the voyage: Captain: Ross; Investor: Ross; Investor: Shoolbred; Captain: Hay, John. The voyage began at Boston on 25 August 1774. Principal recorded place where captives were acquired: Gold Coast, port unspecified. Principal recorded disembarkation place: Grenada, place unspecified. Estimated mortality during the crossing: 20.0%. Recorded outcome: Voyage completed as intended.