This article presents how ship trajectories have been built from historical sources dealing with maritime trade in the 18th century. It first summarizes the method for building the routes, and qualifying the uncertainty level linked to each of its segments. Then, it details how the geometries of these segments connecting two successive stopovers were automatically calculated in order to draw a map with maritime paths only. The algorithm, programmed with PL/SQL language, is available under an open-source licence (https://gitlab.huma-num.fr/portic/porticapi). Finally, an online tool for querying and mapping these routes with their associated level of uncertainty is exposed (http://shiproutes.portic.fr). We show its usefulness for historians, in particular for the control of the validity of built ship trajectories.

翻译：本文阐述了如何利用十八世纪海上贸易的历史资料重建船舶航行轨迹。首先概述了航线构建方法，并说明了如何评估各航段的不确定性水平。随后详细介绍了如何自动计算连接两个连续停靠港的航段几何形状，从而绘制仅包含海上路径的地图。该算法采用PL/SQL语言编写，已基于开源许可证发布（https://gitlab.huma-num.fr/portic/porticapi）。最后展示了一个可在线查询并绘制这些航线及其对应不确定性水平的工具（http://shiproutes.portic.fr）。我们证明了该工具对历史学家的实用性，特别是在验证构建船舶轨迹的有效性方面。