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France Had the Largest Submarine in the World in 1934: Its 130 Men Disappeared in February 1942 and the Wreck Was Never Found

Summary by SciencePost
The Surcouf was a mastodon of the depths: the largest submarine ever built in its time, equipped with 203 mm guns and a seaplane hangar. Launched in 1934 by the French National Navy, this revolutionary submarine cruiser disappeared without leaving any trace on the night of February 18 to 19, 1942 with its 130 crew. Nearly eighty-five years later, his wreck remains in the bottom of the Caribbean, unobtainable. More
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The Surcouf was a mastodon of the depths: the largest submarine ever built in its time, equipped with 203 mm guns and a seaplane hangar. Launched in 1934 by the French National Navy, this revolutionary submarine cruiser disappeared without leaving any trace on the night of February 18 to 19, 1942 with its 130 crew. Nearly eighty-five years later, his wreck remains in the bottom of the Caribbean, unobtainable. More

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SciencePost broke the news on Thursday, August 6, 2026.
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