Geovisual analytics is used for discovering patterns in spatiotemporal data by the way of visual interaction. But developing adequate visualization tools requires knowing the tasks and the users that will perform this data exploration. In order to bene t from geovisual analytics advances, it is necessary for maritime surveillance uses of maps to be investigated. Formalization of map uses and of user pro ling lay the foundations for investigating the contribution of geovisual analytics. Then, geovisual analytics solutions are modeled to investigate the tasks they allow and the requirements of use. We propose an ontological model for user pro ling and geovisual analytics solutions.