\ I. Yi Sun-sin: A National Hero of Korea -- II. About Yi Sun-Sin -- III. Historical Background -- IV. The Major Naval Battles of Yi : 1. The Battle of Hansan and the 'Crane Wing' Formation -- 2. The Battle of Myongnyang, A Maritime Miracle -- 3. The Battle of Noryang, The Final Battle -- V. The Kobukson or 'Turtle Ship' -- VI. The War Diary of Yi Sun-sin -- VII. Life and Death of Admiral Yi Sun-sin -- VIII. Conclusion -- Appendix: Admiral Yi's War Diary and Memorials to Court -- The Warships and Weaponry of Korea and Japan -- Pictures of Kobukson -- The Admiralship of Yi Sun-sin -- Yi Sun-sin: His Memories and Influence on Korea Today -- Naval Battles of Admiral Yi Sun-sin -- Chronological Career Note.