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Which famous 16th-century naval vessel, used to fight off invasions, featured a protective spiked roof?

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Correct answer: Geobukseon

The Geobukseon, or Turtle Ship, was a formidable warship used by Admiral Yi Sun-sin during the Imjin War. Its covered deck was spiked with iron to prevent enemy boarding, and a dragon head at the bow could emit toxic smoke. The standard Korean warship of the time was the Panokseon, which lacked this specialized protective shell. Photo: Feth, Wikimedia Commons, GPL.

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Source: Wikipedia (CC BY-SA)

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