| Ship, nation, owners | Voyage identification number | 82491 |
| Voyage in 1999 CD-ROM | Yes | |
| Vessel name | Martha | |
| Flag | Great Britain | |
| Flag IMP | Great Britain | |
| Place constructed | Liverpool | |
| Year constructed | 1788 | |
| Place registered | Liverpool | |
| Year registered | 1788 | |
| Rig | Brig | |
| Tonnage | 149 | |
| Standardized tonnage IMP | 149 | |
| Guns mounted | ||
| Vessel owners | Fisher, Ralph Kewley, John Kewley, Patrick |
|
| 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 | ||
| Voyage Itinerary | Place where voyage began IMP | Liverpool |
| First place of slave purchase | ||
| Second place of slave purchase | ||
| Third place of slave purchase | ||
| Principal place of slave purchase IMP | Africa, port unspecified | |
| Places of call before Atlantic crossing | ||
| First place of slave landing | Jamaica, place unspecified | |
| Second place of slave landing | ||
| Third place of slave landing | ||
| Principal place of slave landing IMP | Jamaica, place unspecified | |
| Place where voyage ended | Liverpool | |
| Region where voyage began IMP | England and Wales | |
| First region of slave purchase | ||
| Second region of slave purchase | ||
| Third region of slave purchase | ||
| Principal region of slave purchase IMP | Other Africa | |
| 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 | 1790 |
| Date voyage began | 1789-09-07 | |
| Date trade began in Africa | ||
| Date vessel departed Africa | ||
| Date vessel arrived with slaves | 1790-09-22 | |
| Date vessel departed for homeport | 1790-11-01 | |
| Date voyage completed | 1790-12-24 | |
| Voyage length, homeport to slaves landing (days) IMP | 380 | |
| Middle passage (days) IMP | ||
| Captain and Crew | Captain's name | Huson, Thomas |
| Crew at voyage outset | 21 | |
| Crew at first landing of slaves | ||
| Crew deaths during voyage | 6 | |
| Slave (numbers) | Number of slaves intended at first place of purchase | 248 |
| Slaves carried from first port of purchase | ||
| Slaves carried from second port of purchase | ||
| Slaves carried from third port of purchase | ||
| Total slaves embarked | ||
| Total slaves embarked IMP | 216 | |
| Number of slaves arriving at first place of landing | 200 | |
| Number of slaves disembarked at first place of landing | ||
| Number of slaves disembarked at second place of landing | ||
| Number of slaves disembarked at third place of landing | ||
| Total slaves disembarked IMP | 200 | |
| Slave (characteristics) | Percentage men IMP | |
| Percentage women IMP | ||
| Percentage boys IMP | ||
| Percentage girls IMP | ||
| Percentage male IMP | ||
| Percentage children IMP | ||
| Sterling cash price in Jamaica IMP | 47.41 | |
| Slave deaths during middle passage IMP | ||
| Mortality rate IMP | ||
| Source | Sources | LR1790: Lloyd's Register of Shipping, 1764, 1768, 1776, 1778-84, 1786-1787, 1789-1808 (all published in London).
BT98/51,31: BNA (Kew, London) , Board of TradePP,1792(768),XXXV: Great Britain, Parliamentary Papers: 1777, Accounts and Papers, No 9 1788, XXII 1789, XXIV, XXV, XXVI 1790, XXIX, XXX, XXXI 1790-91, XXXIV 1792, XXXV 1795-96, XLII 1798-99, XLVIII 1799 XLVIII 1801-2, IV 1803-4, X 1806, XII 1813-14, XII 1816, VII 1823, XIX 1825, XXVII, XXIX 1826, XXIX 1826-7, XXII, XXVI 1828, XXVI 1829, XXVI 1830, X 1831, XIX 1831-32, XLVII 1842, XLIV 1845,XLIX 1847-8, XXII 1852-3, XXXIX PP,1792(766-7),XXXV: Great Britain, Parliamentary Papers: 1777, Accounts and Papers, No 9 1788, XXII 1789, XXIV, XXV, XXVI 1790, XXIX, XXX, XXXI 1790-91, XXXIV 1792, XXXV 1795-96, XLII 1798-99, XLVIII 1799 XLVIII 1801-2, IV 1803-4, X 1806, XII 1813-14, XII 1816, VII 1823, XIX 1825, XXVII, XXIX 1826, XXIX 1826-7, XXII, XXVI 1828, XXVI 1829, XXVI 1830, X 1831, XIX 1831-32, XLVII 1842, XLIV 1845,XLIX 1847-8, XXII 1852-3, XXXIX T64/286,19: British National Archives (Kew, UK) Treasury HLRO,MP,HL,94.03.22: House of Lords Record Office (London, UK) Main Papers, House of Lords, 1794-1800 craig,121: Craig, Robert and Rupert Jarvis, Liverpool Registry of Merchant Ships (Manchester, 1967). LList, 30 Nov 1790: New Lloyd's List (later, Lloyd's List), (London, England) LList, 28 Dec 1790: New Lloyd's List (later, Lloyd's List), (London, England) Bostock: Liverpool Record Office (Liverpool, UK) 387 MD 54-55, Letterbooks of Robert Bostock |