거북선 is a traditional Korean warship that was used during the late 16th century, particularly in the Imjin War against Japan. Its design features a turtle-shaped shell, which provided protection for the crew and made it difficult for enemies to attack. The ship was equipped with cannons and spikes, enhancing its offensive capabilities. The invention of the 거북선 is attributed to Admiral Yi Sun-sin, a prominent figure in Korean history known for his naval strategies. The ship played a crucial role in several naval battles, showcasing Korea's innovative approach to warfare during that period.