The slave ship Shirburn Castle left the African coast carrying enslaved Africans toward Grenada. About 265 people had been taken aboard.

Vessel: Shirburn Castle; flag: Great Britain; rig: Ship; estimated standardized tonnage: 141. People recorded in connection with the voyage: Investor: Benson, Moses; Investor: Backhouse, John; Captain: Penny, James; Investor: Penny, James; Captain: Dixon, Thomas; Investor: Dixon, Thomas; Investor: Rutson, William; Captain: Preston, Gerrard; Investor: Preston, Gerrard; Investor: Rigby, Peter. The voyage began at Liverpool on 7 February 1791. Principal recorded place where captives were acquired: Ambriz (West Central Africa and St Helena). Principal recorded disembarkation place: Grenada, place unspecified. Estimated mortality during the crossing: 2.0%. Recorded outcome: Voyage completed as intended.