a bay of the Yellow Sea on the western coast of South Korea.
The Kanghwa Man cuts deep inland for 85 km. It is 122 kmwide. Its depth reaches 54 m. The banks are extremely jagged, and there are many islands, rocks, and shoals in the bay. Thetides are semidiurnal and reach 10 m. The port of Inchon (Chemulpo) is located on the bay.