| Ship, nation, owners | Voyage identification number | 10787 |
| Voyage in 1999 CD-ROM | Yes | |
| Vessel name | Jonge Willem | |
| Flag | Netherlands | |
| Flag IMP | Netherlands | |
| Place constructed | ||
| Year constructed | ||
| Place registered | ||
| Year registered | ||
| Rig | Fregat | |
| Tonnage | 140 | |
| Standardized tonnage IMP | 321 | |
| Guns mounted | ||
| Vessel owners | Middelburgsche Commercie Compagnie | |
| 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 | Zeeland |
| First place of slave purchase | Gabon | |
| Second place of slave purchase | Cap Lopez | |
| Third place of slave purchase | Malembo | |
| Principal place of slave purchase IMP | Gabon | |
| Places of call before Atlantic crossing | ||
| First place of slave landing | Demerara | |
| Second place of slave landing | Essequibo | |
| Third place of slave landing | ||
| Principal place of slave landing IMP | Demerara | |
| Place where voyage ended | ||
| Region where voyage began IMP | Netherlands | |
| First region of slave purchase | Bight of Biafra and Gulf of Guinea islands | |
| Second region of slave purchase | Bight of Biafra and Gulf of Guinea islands | |
| Third region of slave purchase | West Central Africa and St. Helena | |
| Principal region of slave purchase IMP | Bight of Biafra and Gulf of Guinea islands | |
| First region of slave landing | British Guiana | |
| Second region of slave landing | Dutch Guianas | |
| Third region of slave landing | ||
| Principal region of slave landing IMP | British Guiana | |
| Region where voyage ended | ||
| Voyage Dates | Year arrived with slaves IMP | 1775 |
| Date voyage began | 1774-06-07 | |
| Date trade began in Africa | 1774-08-?? | |
| Date vessel departed Africa | ||
| Date vessel arrived with slaves | 1775-12-28 | |
| Date vessel departed for homeport | 1776-05-27 | |
| Date voyage completed | 1776-08-03 | |
| Voyage length, homeport to slaves landing (days) IMP | 569 | |
| Middle passage (days) IMP | ||
| Captain and Crew | Captain's name | Loef, Cornelis |
| Crew at voyage outset | 32 | |
| Crew at first landing of slaves | ||
| Crew deaths during voyage | ||
| Slave (numbers) | Number of slaves intended at first place of purchase | |
| Slaves carried from first port of purchase | 88 | |
| Slaves carried from second port of purchase | 2 | |
| Slaves carried from third port of purchase | 73 | |
| Total slaves embarked | ||
| Total slaves embarked IMP | 163 | |
| Number of slaves arriving at first place of landing | ||
| Number of slaves disembarked at first place of landing | 68 | |
| Number of slaves disembarked at second place of landing | 64 | |
| Number of slaves disembarked at third place of landing | ||
| Total slaves disembarked IMP | 132 | |
| Slave (characteristics) | Percentage men IMP | 46.2% |
| Percentage women IMP | 32.6% | |
| Percentage boys IMP | 13.6% | |
| Percentage girls IMP | 7.6% | |
| Percentage male IMP | 59.8% | |
| Percentage children IMP | 21.2% | |
| Sterling cash price in Jamaica IMP | 50.16 | |
| Slave deaths during middle passage IMP | ||
| Mortality rate IMP | ||
| Source | Sources | Postma,304-401: Postma, Johannes Menne, The Dutch in the Atlantic Slave Trade, 1600-1815 (Cambridge, 1990).
Poortvliet,III,228: Poortvliet, P. F. (ed.), De Bemanning der Schepen van de Middelburgsche Commercie Compagnie, 1721-1803, 5 vols. (Zeeland, 1995). Goslinga,610-47: Goslinga, Cornelis Ch., The Dutch in the Caribbean and the Guianas, 1680-1791 (Assen, 1985). Unger,II,109-13: Unger, W. S.,"Bijdragen tot de geschiedenis van de Nederlandse slavenandel, II" Economisch-Historisch Jaarboek, 28 (1958-60). ARA,Aanwinsten,2093: Nationaal Archief (The Hague, Netherlands) Aanwinsten MCC,677-80: Zeeuws Archief (Middelburg, Netherlands) Middelburgsche Commercie Compagnie |