Cheonsu Bay

Ch'ŏnsu Bay cuts northward into Korea's western coast, sheltered by Anmyŏn Island and the mainland of Ch'ungch'ŏng. Its shallow inner waters and large tides expose broad mudflats, while islands and inlets break up the surrounding shore. In 1638 Governor Kim Yuk had a channel cut through the narrow connection at Anmyŏn to ease the passage of vessels carrying tax grain.