The slave ship Unity left the African coast carrying enslaved Africans toward Cuba. About 294 people had been taken aboard.

Vessel: Unity; flag: Great Britain; estimated standardized tonnage: 108. People recorded in connection with the voyage: Investor: Royal African Company; Captain: Plaisted, Fra; Investor: Plaisted, Fra. The voyage began at London on 1 December 1721. Principal recorded place where captives were acquired: Cape Coast Castle (Gold Coast). Principal recorded disembarkation place: Trinidad de Cuba. Recorded duration of the captives' Atlantic crossing: 70 days. Estimated mortality during the crossing: 12.6%. Recorded outcome: Captured by Spanish - after embarkation of enslaved people.