Visualizations atlas
Map of the provinces investigated : Poitou, Aunis, Saintonge, Angoumois (PASA)
Map of PASA region ports
Map of customs offices in the PASA region
The decline of the La Rochelle region following the loss of Canada
Highly specialized ports: the slave trade, the salt trade, and the brandy trade
La Rochelle, a dominating port but not a regional hub
Products with the highest export value in 1789: comparison between the La Rochelle customs region and the French average
Evolution of the share of La Rochelle trade in relation to France as a whole
Home country of ships departing from the region in 1789
Home ports of ships departing from the PASA region in 1789
Destinations of ships sailing from the PASA region to another country in 1789
Home port of ships sailing to another country in 1789
Share of French navigation in the region
Comparison of colonial, local, and other exports by customs office
Flows of ships outfitted by the port of La Rochelle in 1787
Ports of departure of vessels transporting salt in 1789 from the PASA region, aggregated by cumulative tonnage
Destination of ships departing from Marennes in 1789, aggregated by country and by cumulative tonnage
Evolution of brandy exports from the La Rochelle customs region (free ports not included)
Comparison of brandy exports from different customs regions (free ports not included - no data for Montpellier in 1770)
Origin of brandy exports from the La Rochelle customs region in 1789 (free ports not included)
Maps of ships leaving Marennes with salt in 1789, sized by cumulative tonnage
Destinations of ships sailing from the PASA region to another country in 1789
How were the data and visualization produced ?
Data was drawn from the Navigocorpus database. We selected the ships that sailed from the PASA region to a foreign country in 1789. We then aggregated the data by port reported as destination and represented their cumulative tonnage.
How to read the visualization?
The chart shows the relative importance of the different foreign destinations of ships departing from the ports of the La Rochelle customs region in 1789. Each rectangle shows the cumulative tonnage by destination. The size of the rectangles is proportional to the tonnage expressed in tonneaux (1 tx is approximately 1.44 cubic meters). The background color shows the ports belonging to the same country at the time. It should be noted that sometimes the destination is vague, such as "Baltic Sea". The chart shows the weight of British destinations and of North Sea and Baltic countries. Destinations in Africa (Côte d'Or and Côte d 'Angole) clearly confirm the slave trade.