The design came from a German engineer, Max Hecht, who was put in charge of building Western-style forts. He chose five harbors: Penghu, Keelung, Tamsui, Anping and Qijin. In total 10 new forts were planned, all to be armed with Armstrong guns from Britain, 31 of them in all, ordered through the British firm Jardine Matheson. At Tamsui, two new forts were planned. One was the fort you are standing in, the other was a small one at the torpedo camp, and nothing of that one remains. Building followed a clear order. First the site's boundaries were fixed, then the trenches, barracks and outer works were dug and raised. After that came the walls and bases for the guns. But the guns were late, and work on those parts stalled. Imported iron and cement were also expensive, so some corners were probably trimmed in sections that enemy fire would not directly strike. Once the guns were installed in May 1890, the fort was complete. The armament did not stay the same. During the Sino-Japanese War, two eight-inch Armstrong breech-loading guns were swapped for two Krupp guns of 21 centimeters, with their muzzles aimed straight at the river mouth.