What is claimed, by whom, and against what
“Bagamoyo slave port” is a fixture of itineraries, guidebooks and on-site interpretation. It is also the single most contested claim on this coast, and it is contested not by revisionists but by the ordinary machinery of historical research. This page sets out who says what. It does not resolve it, because it is not resolved.
What is not in dispute: Bagamoyo was the coastal terminus of the central caravan route, which ran more than 1,200 kilometres from Ujiji on Lake Tanganyika; that route carried both ivory and enslaved people; the trade was officially forbidden in 1873 under British pressure and continued secretly for some years afterwards; and a Catholic mission was founded here in 1868 specifically to shelter people freed from it. The argument is about scale, about whether Bagamoyo held the role of a major slave port, and about which buildings in the town are evidence of what.
The official position
Tanzania’s tentative World Heritage submission for the Central Slave and Ivory Trade Route, lodged by the Antiquities Department on 20 February 2006 and covering six centres from Ujiji to Bagamoyo, describes Bagamoyo as a major harbour that played a key role in the East African slave trade, as a place of memory for the suffering caused by slavery and the slave trade, and as the terminal of the route from Ujiji, from which enslaved people were shipped on to the market at Zanzibar. It names as evidence the Caravan Serai, the Von Wissmann block, the Old Market, the Customs House and the Old Fort, together with the mission’s freedom village and its museum.
The national antiquities record for the Caravan Serai goes further still, identifying that compound as the specific point where captives arrived before shipment to Zanzibar, and deriving the name of the town from what they were told on arrival.
What the research found
Peer-reviewed work published in 2013 concludes that enslaved people were a minor component of Bagamoyo’s exports, that the figures in general circulation are greatly exaggerated, and that what made the town commercially important was ivory. It found no evidence supporting Bagamoyo as a major slave port, and a second study reached the same conclusion independently; both corroborate Kilwa, further south, in the role usually assigned to Bagamoyo.
On the buildings, the same work found no record of when a slave market at Bagamoyo closed — which suggests, it argues, that such a market was neither permanent nor substantial — and raised the possibility that local memory of a market has been transferred onto the German customs house.
What to do with that on the ground
Not much, in a sense, and that is the point. You will still walk the same buildings. What changes is what you do with what you are told beside them. A number is a claim; a building’s identification is a claim; an etymology is a claim. Asking where a claim comes from is not scepticism about the history of slavery on this coast, which is thoroughly documented and appalling. It is scepticism about whether a particular wall is the thing it is being called.
The strongest evidence at Bagamoyo is in the mission archive rather than in any of the buildings usually pointed at. The town guide sets out all three contested claims, and the wider treatment of the trade and of what the record does establish is in the guide to slave trade history tours.
Common questions
So was Bagamoyo a slave port or not?
It was a port on a route that carried enslaved people. Whether it was a major slave port is what the research disputes, and the research says no. The official interpretation says yes. Both positions are given above.
Where was the major slave port, then?
The research corroborates Kilwa. The market itself was at Zanzibar, where the former slave market in Stone Town is a documented and interpreted site.
Does this mean the guides are wrong?
It means they are repeating the official interpretation, which is a reasonable thing for a guide to do. Ask what the evidence is, and be prepared for the honest answer to be that it is contested.