또한 '장포'라는 포구가 있었는데, 『세종실록지리지』의 기록에 따르면 1391년에 장포에 성을 쌓고 만호 겸 감무를 두었다고 전한다.
In addition, there was a port called "Jangpo", and according to the records of "Sejong Silrokjiriji", it is said that in 1391, a fortress was built in Jangpo and Manho and Gammu were placed.