| Ship, nation, owners | Voyage identification number | 91567 |
| Voyage in 1999 CD-ROM | Yes | |
| Vessel name | Unity | |
| Flag | Great Britain | |
| Flag IMP | Great Britain | |
| Place constructed | Liverpool | |
| Year constructed | 1763 | |
| Place registered | Liverpool | |
| Year registered | 1769 | |
| Rig | Ship | |
| Tonnage | 100 | |
| Standardized tonnage IMP | 182 | |
| Guns mounted | 4 | |
| Vessel owners | Savage, Richard Hodgson, Thomas Dobson, John Lowe, James Copeland, John Green, John Moneypenny, James |
|
| Voyage Outcome | Particular outcome of voyage | Voyage completed as intended |
| Outcome of voyage for slaves IMP | Slaves disembarked in Americas | |
| Outcome of voyage if ship captured IMP | Not captured | |
| Outcome of voyage for owner IMP | Delivered slaves for original owners | |
| African resistance | Slave insurrection | |
| Voyage Itinerary | Place where voyage began IMP | Liverpool |
| First place of slave purchase | São Tomé | |
| Second place of slave purchase | Whydah, Ouidah | |
| Third place of slave purchase | São Tomé | |
| Principal place of slave purchase IMP | Whydah, Ouidah | |
| Places of call before Atlantic crossing | São Tomé | |
| First place of slave landing | Kingston | |
| Second place of slave landing | ||
| Third place of slave landing | ||
| Principal place of slave landing IMP | Kingston | |
| Place where voyage ended | Liverpool | |
| Region where voyage began IMP | England and Wales | |
| First region of slave purchase | Bight of Biafra and Gulf of Guinea islands | |
| Second region of slave purchase | Bight of Benin | |
| Third region of slave purchase | Bight of Biafra and Gulf of Guinea islands | |
| Principal region of slave purchase IMP | Bight of Benin | |
| First region of slave landing | Jamaica | |
| Second region of slave landing | ||
| Third region of slave landing | ||
| Principal region of slave landing IMP | Jamaica | |
| Region where voyage ended | England and Wales | |
| Voyage Dates | Year arrived with slaves IMP | 1770 |
| Date voyage began | 1769-07-21 | |
| Date trade began in Africa | 1769-11-16 | |
| Date vessel departed Africa | 1770-05-31 | |
| Date vessel arrived with slaves | 1770-07-24 | |
| Date vessel departed for homeport | 1770-10-28 | |
| Date voyage completed | 1771-05-24 | |
| Voyage length, homeport to slaves landing (days) IMP | 368 | |
| Middle passage (days) IMP | 54 | |
| Captain and Crew | Captain's name | Norris, Robert |
| Crew at voyage outset | 35 | |
| Crew at first landing of slaves | ||
| Crew deaths during voyage | ||
| Slave (numbers) | Number of slaves intended at first place of purchase | 400 |
| Slaves carried from first port of purchase | 2 | |
| Slaves carried from second port of purchase | 225 | |
| Slaves carried from third port of purchase | 200 | |
| Total slaves embarked | 427 | |
| Total slaves embarked IMP | 427 | |
| Number of slaves arriving at first place of landing | 410 | |
| Number of slaves disembarked at first place of landing | 407 | |
| Number of slaves disembarked at second place of landing | ||
| Number of slaves disembarked at third place of landing | ||
| Total slaves disembarked IMP | 410 | |
| Slave (characteristics) | Percentage men IMP | |
| Percentage women IMP | ||
| Percentage boys IMP | ||
| Percentage girls IMP | ||
| Percentage male IMP | 45.7% | |
| Percentage children IMP | ||
| Sterling cash price in Jamaica IMP | ||
| Slave deaths during middle passage IMP | 17 | |
| Mortality rate IMP | 4.0% | |
| Source | Sources | LST,1744-1786: Richardson, David, Katherine Beedham, and M. M. Schofield, Liverpool Shipping and Trade, 1744-1786 (ESRC Archives, University of Essex, 1992).
LR1768: Lloyd's Register of Shipping, 1764, 1768, 1776, 1778-84, 1786-1787, 1789-1808 (all published in London). CO137/88,pp.20-25: Colonial Office BNA (Kew) MMM,D/EARLE: Merseyside Maritime Museum (Liverpool, UK) D/EARLE, Earle Family and Business Archive, 1644-1930 Lambert,68,3-4: Lambert, Sheila (ed.), House of Commons Sessional Papers of the Eighteenth Century, 145 vols. (Wilmington, DE, 1975). |