Gomso Bay

Gomso Bay lies between Buan and Gochang on Korea's western coast. In the Goryeo period its inner shore held Anheungchang, one of the kingdom's thirteen grain-transport depots. Tax grain from Gobu and neighbouring districts was collected here before being shipped north along the coast to the royal warehouses at Gaegyeong. Storage, official supervision and sea transport made the bay an important link between agricultural districts and the capital.

The Goryeosa records six grain ships attached to the depot, each described as carrying a thousand seok. An appointed official supervised storage and transport. The depot's closure is generally placed in late Goryeo, although its precise date is uncertain. It was not rebuilt in the bay during the Joseon dynasty. The coast's administrative role therefore changed as the old grain-shipping establishment disappeared. This earlier history connects Gomso's tidal waters to the movement of agricultural taxes, while distinguishing the medieval depot from the much later ports and saltworks associated with the bay.