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How did the crew of the Surcouf operate its gun turret? Was the interior watertight and accessible from the interior of the submarine while submerged? Did the guns require tampions for every
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![The French battleship Richelieu sailing through the East River in New York City to be repaired and refitted for modernization at the Brooklyn Navy Yard. 11 February, 1943 [960x1270] : r/WarshipPorn The French battleship Richelieu sailing through the East River in New York City to be repaired and refitted for modernization at the Brooklyn Navy Yard. 11 February, 1943 [960x1270] : r/WarshipPorn](https://preview.redd.it/the-french-battleship-richelieu-sailing-through-the-east-v0-56dfw1kn3ed81.jpg?auto=webp&s=3205f5e48d9af9e274f10cbedb157a8b26ea40f3)