This study investigates the potential of geophysical methods to identify a recently uncovered wooden shipwreck on the foredune of the Cap Ferret Spit (SW France), briefly exposed during winter 2020–2021. The objectives were to characterize the internal architecture and development of the dune system, and to precise the shipwreck's location and size. A multi-geophysical approach was deployed, combining ground-penetrating radar and magnetic surveys with UAV. The GPR survey revealed that the dune system is composed of a natural former dune overlain by a modern managed dune, influenced by coastal management practices since the mid-19th century (including wooden fences). Magnetic surveys identified a significant anomaly in the foredune area, in the same location as hyperbola-shaped anomalies observed in GPR profiles. This concordance suggests the presence of a single wreck (12–15 m in length), rather than fragmented remains. Further magnetic mapping at higher altitudes (7 m) identified additional dipolar anomalies, with one attributed to a bunker at the top of the dune, and others likely corresponding to buried WWII Atlantic Wall fortifications. These results highlight the value of combining geophysical techniques to improve knowledge of the coastal zone, for both geological and archeological issues.