Laboratory: Institut Pprime CNRS Location of the internship/PhD thesis: Futuroscope, Poitiers (France). Duration: 5-6 months+3 years. Starting in March-April 2025. Internship and PhD thesis Supervisors: Germain Rousseaux, CNRS Research Director and co-Team leader of Curiosity and Julien Dambrine, Associate Professor at Poitiers University, Laboratory of Mathematics and Applications. E-mail: germain.rousseaux@cnrs.fr , julien.dambrine@math.univ-poitiers.fr Telephone: 05 49 49 69 59 Description of the subject for master's (5-6 months) and doctorate (3 years). Context of the work: The Curiosity team of the Pprime institute wishes to recruit a Master 2 student leading to a PhD thesis recruitment both funded within the framework of a collaboration with the Voies Navigables de France (French Waterways, VNF) and the Laboratoire de Mathématiques et Applications (LMA) of Poitiers in order to study navigation in a confined environment from a fluid-structure interaction perspective. In addition to an ongoing post-doctorate on a revisit of theoretical work on the effects of hydraulic and wave confinement for a river boat interacting with the structure (typically a trapezoidal canal), we now wish to feed the theoretical studies with experiments to screen the models as well as to guide modelers towards the relevant models due to gaps in the understanding of the phenomena as revealed by the analysis of the literature and that the experiments could fill.