朝鮮王朝実録
The Japanese navy was heavily damaged (while at least 30 of the Japanese fighting ships were destroyed, the total number of damaged ships, to include those supporting ships that may have sustained damage, was not clearly reported). As previously mentioned, Kurushima was killed &amp; beheaded, and Tōdō Takatora (the hero of Chilcheollyang) was wounded. According to the Annals of the Joseon Dynasty, half of the Japanese sailors and marines were casualties.