Yi Sun-sin
Korean naval commander who invented revolutionary turtle ships
Admiral Yi Sun-sin (1545-1598) redefined naval warfare during Japan's Imjin Invasion. His geobukseon (turtle ships) featured:
- Iron-plated dragon-headed hulls
- Multidirectional cannon ports
- Smoke-emitting intimidation devices
Despite political persecution, Yi achieved:
| Battle | Ships | Result |
|---|---|---|
| Myeongnyang | 13 vs 333 | Decisive Korean victory |
His Nanjung Ilgi war diary remains crucial military literature, showcasing brilliant strategy and leadership under extreme adversity.