Charles River Editors

When the Surcouf launched in 1929, it was a technological marvel. This wasn’t a conventional submarine at all, but a 3,300-ton, 300-foot-long submersible light cruiser. Armed not just with torpedoes but also a pair of eight-inch guns, the Surcouf had a range of over 10,000 miles and was equipped with a seaplane in a hanger and a prison capable of holding up to 40 prisoners. When it was launched, the submarine looked like something out of the novels of Jules Verne, and many people believed it would make all existing submarines (and many surface warships) obsolete. However, by the time France found itself at war with Nazi Germany in 1939, the Surcouf was outdated and basically irrelevant, though it was still in active service with the French Navy.

When France was defeated by Nazi Germany in June 1940, the majority of French troops and warships ceased fighting. However, some relocated to Britain, the only nation still fighting Germany, to join Free French forces under the command of the charismatic General Charles De Gaulle. The crew of the Surcouf joined the Free French Navy and served from late 1940 to February 1942, when she called in at the British port of Bermuda before sailing for the island of Tahiti, French Polynesia, in the South Pacific. On February 12, the Surcouf left Bermuda en route for Tahiti via the Panama Canal and was never seen again.

There have been many theories about what might have happened to the Surcouf and her 130-man crew, ranging from an accidental collision to sabotage and even accidental (or deliberate) attacks by her allies. As a result, the fate of the Surcouf has become one of the most enduring and baffling maritime mysteries, and it still generates a great deal of debate.

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