《明史·志·卷六十二》
四十五年，顺天巡抚耿随朝探测海上运道，从永平西面下海，一百四十五里到纪各庄，又四百二十六里到天津，都是靠近海岸行船。
四十五年，顺天巡抚耿随朝勘海道，自永平西下海，百四十五里至纪各庄，又四百二十六里至天津，皆傍岸行舟。
In the forty-fifth year, Shuntian governor Geng Suizhao explored the maritime transportation route, sailed from the west of Yongping, 145 li to Jigezhuang, and then 426 li to Tianjin, all sailing close to the coast.