Overview
- The wreck was located on November 17, 2025 off Cádiz, Spain, after eight decades without a confirmed position.
- The mission was carried out by a University of Western Brittany research-diver team led by Erwan L’Her.
- Logbooks provided by the former commander's family reshaped the search area, and sonar imaging verified the submarine's hull.
- A prior attempt in December 2024 failed before the team resumed the search and succeeded this year.
- Le Tonnant was damaged during the 1942 Battle of Casablanca and scuttled near Spain, with roughly 30 survivors from a crew of 72, and the team now plans to look for the Sidi-Ferruch and Le Conquérant wrecks.