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This Secret Boat Was Built for a WWII Invasion That Never Happened

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This Secret Boat Was Built for a WWII Invasion That Never Happened

Short | 02:11

In 2011, declassified CIA documents shed light on a covert government program dating back to WWII. At its center was a submersible craft built for a hypothetical invasion of Japan.

More About This episode

Explore the dark side of naval warfare--a world of deception, double-dealing, and disguised vessels--throughout the first half of the 20th century. See how Britain's Royal Navy attempted to fool German U-boats through the technique of "dazzle painting," then look at the ingeniously designed Gizmo, an American spy vessel that never made it beyond American waters.

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